diff --git a/src/lv_core/lv_obj.c b/src/lv_core/lv_obj.c
index 50c56128a..7947da4f4 100644
--- a/src/lv_core/lv_obj.c
+++ b/src/lv_core/lv_obj.c
@@ -282,14 +282,13 @@ lv_obj_t * lv_obj_create(lv_obj_t * parent, const lv_obj_t * copy)
 
     new_obj->ext_attr = NULL;
 
-    lv_style_list_init(&new_obj->style_dsc);
-
-    if(parent != NULL) {
-        lv_obj_add_style_class(new_obj, LV_OBJ_PART_MAIN, _t(PANEL));
+    if(copy == NULL) {
+        lv_style_list_init(&new_obj->style_list);
+        if(parent != NULL) lv_obj_add_theme(new_obj, LV_OBJ_PART_MAIN, LV_THEME_PANEL);
+        else  lv_obj_add_theme(new_obj, LV_OBJ_PART_MAIN, LV_THEME_SCR);
     } else {
-        lv_obj_add_style_class(new_obj, LV_OBJ_PART_MAIN, _t(SCR));
+        lv_style_list_copy(&new_obj->style_list, &copy->style_list);
     }
-
     /*Copy the attributes if required*/
     if(copy != NULL) {
         lv_area_copy(&new_obj->coords, &copy->coords);
@@ -1209,13 +1208,13 @@ void lv_obj_set_style_ptr(lv_obj_t * obj, uint8_t part, lv_style_property_t prop
     lv_obj_refresh_style(obj);
 }
 
-void lv_obj_add_style_class(lv_obj_t * obj, uint8_t part, lv_style_t * style)
+void lv_obj_add_style(lv_obj_t * obj, uint8_t part, lv_style_t * style)
 {
     if(style == NULL) return;
 
     lv_style_list_t * style_dsc = lv_obj_get_style(obj, part);
     if(style_dsc == NULL) {
-        LV_LOG_WARN("lv_obj_add_style_class: can't find style with `type`");
+        LV_LOG_WARN("lv_obj_add_style: can't find style with `type`");
         return;
     }
 
@@ -1224,6 +1223,12 @@ void lv_obj_add_style_class(lv_obj_t * obj, uint8_t part, lv_style_t * style)
     lv_obj_refresh_style(obj);
 }
 
+
+void lv_obj_add_theme(void * obj, uint8_t part, lv_theme_style_t name)
+{
+    lv_obj_add_style(obj, part, lv_theme_get_style(name));
+}
+
 void lv_obj_reset_style(lv_obj_t * obj, uint8_t part)
 {
     lv_style_list_t * style_dsc = lv_obj_get_style(obj, part);
@@ -2060,7 +2065,7 @@ lv_coord_t lv_obj_get_ext_draw_pad(const lv_obj_t * obj)
 
 lv_style_list_t * lv_obj_get_style(const lv_obj_t * obj, uint8_t part)
 {
-	if(part == LV_OBJ_PART_MAIN) return &obj->style_dsc;
+	if(part == LV_OBJ_PART_MAIN) return &((lv_obj_t*)obj)->style_list;
 
 	lv_get_style_info_t info;
 	info.part = part;
@@ -2075,16 +2080,16 @@ lv_style_list_t * lv_obj_get_style(const lv_obj_t * obj, uint8_t part)
 }
 
 
-lv_style_int_t lv_obj_get_style_int(lv_obj_t * obj, uint8_t part, lv_style_property_t prop)
+lv_style_int_t lv_obj_get_style_int(const lv_obj_t * obj, uint8_t part, lv_style_property_t prop)
 {
     if(obj->state == obj->prev_state) {
         return lv_obj_get_style_int_core(obj, part, prop);
     } else {
         lv_style_int_t act_int = lv_obj_get_style_int_core(obj, part, prop);
         lv_obj_state_t state_ori = obj->state;
-        obj->state = obj->prev_state;
+        ((lv_obj_t*)obj)->state = obj->prev_state;
         lv_style_int_t prev_int = lv_obj_get_style_int_core(obj, part, prop);
-        obj->state = state_ori;
+        ((lv_obj_t*)obj)->state = state_ori;
 
         if(prop == LV_STYLE_RADIUS) {
             if(act_int == LV_RADIUS_CIRCLE || prev_int == LV_RADIUS_CIRCLE) {
@@ -2108,31 +2113,31 @@ lv_style_int_t lv_obj_get_style_int(lv_obj_t * obj, uint8_t part, lv_style_prope
 
 
 
-lv_color_t lv_obj_get_style_color(lv_obj_t * obj, uint8_t part, lv_style_property_t prop)
+lv_color_t lv_obj_get_style_color(const lv_obj_t * obj, uint8_t part, lv_style_property_t prop)
 {
    if(obj->state == obj->prev_state) {
        return lv_obj_get_style_color_core(obj, part, prop);
    } else {
        lv_color_t act_color = lv_obj_get_style_color_core(obj, part, prop);
        lv_obj_state_t state_ori = obj->state;
-       obj->state = obj->prev_state;
+       ((lv_obj_t*)obj)->state = obj->prev_state;
        lv_color_t prev_color = lv_obj_get_style_color_core(obj, part, prop);
-       obj->state = state_ori;
+       ((lv_obj_t*)obj)->state = state_ori;
 
        return lv_color_mix(act_color, prev_color, obj->state_anim);
    }
 }
 
-lv_opa_t lv_obj_get_style_opa(lv_obj_t * obj, uint8_t part, lv_style_property_t prop)
+lv_opa_t lv_obj_get_style_opa(const lv_obj_t * obj, uint8_t part, lv_style_property_t prop)
 {
     if(obj->state == obj->prev_state) {
         return lv_obj_get_style_opa_core(obj, part, prop);
     } else {
         lv_opa_t act_opa = lv_obj_get_style_opa_core(obj, part, prop);
         lv_obj_state_t state_ori = obj->state;
-        obj->state = obj->prev_state;
+        ((lv_obj_t*)obj)->state = obj->prev_state;
         lv_opa_t prev_opa = lv_obj_get_style_opa_core(obj, part, prop);
-        obj->state = state_ori;
+        ((lv_obj_t*)obj)->state = state_ori;
 
         if(obj->state_anim >= 255) return act_opa;
         return prev_opa + (((act_opa - prev_opa) * obj->state_anim) >> 8);
@@ -2140,7 +2145,7 @@ lv_opa_t lv_obj_get_style_opa(lv_obj_t * obj, uint8_t part, lv_style_property_t
 }
 
 
-const void * lv_obj_get_style_ptr(lv_obj_t * obj, uint8_t part, lv_style_property_t prop)
+const void * lv_obj_get_style_ptr(const lv_obj_t * obj, uint8_t part, lv_style_property_t prop)
 {
     if(obj->state == obj->prev_state) {
         return lv_obj_get_style_ptr_core(obj, part, prop);
@@ -2148,9 +2153,9 @@ const void * lv_obj_get_style_ptr(lv_obj_t * obj, uint8_t part, lv_style_propert
         if(obj->state_anim > 128) return lv_obj_get_style_ptr_core(obj, part, prop);
 
         lv_obj_state_t state_ori = obj->state;
-        obj->state = obj->prev_state;
-        void * prev_ptr = lv_obj_get_style_ptr_core(obj, part, prop);
-        obj->state = state_ori;
+        ((lv_obj_t*)obj)->state = obj->prev_state;
+        const void * prev_ptr = lv_obj_get_style_ptr_core(obj, part, prop);
+        ((lv_obj_t*)obj)->state = state_ori;
 
         return prev_ptr;
     }
@@ -2785,7 +2790,7 @@ static lv_res_t lv_obj_signal(lv_obj_t * obj, lv_signal_t sign, void * param)
 {
     if(sign == LV_SIGNAL_GET_STYLE) {
         lv_get_style_info_t * info = param;
-        if(info->part == LV_OBJ_PART_MAIN) info->result = &obj->style_dsc;
+        if(info->part == LV_OBJ_PART_MAIN) info->result = &obj->style_list;
         else info->result = NULL;
         return LV_RES_OK;
     }
@@ -2851,7 +2856,7 @@ static void refresh_children_position(lv_obj_t * obj, lv_coord_t x_diff, lv_coor
 
 /**
  * Refresh the style of all children of an object. (Called recursively)
- * @param style refresh objects only with this style_dsc.
+ * @param style refresh objects only with this style_list.
  * @param obj pointer to an object
  */
 static void report_style_mod_core(void * style, lv_obj_t * obj)
diff --git a/src/lv_core/lv_obj.h b/src/lv_core/lv_obj.h
index 4a5365eac..a8e1cced7 100644
--- a/src/lv_core/lv_obj.h
+++ b/src/lv_core/lv_obj.h
@@ -26,6 +26,7 @@ extern "C" {
 #include "../lv_misc/lv_bidi.h"
 #include "../lv_hal/lv_hal.h"
 #include "../lv_draw/lv_draw_rect.h"
+#include "../lv_themes/lv_theme.h"
 
 /*********************
  *      DEFINES
@@ -223,7 +224,7 @@ typedef struct _lv_obj_t
     lv_design_cb_t design_cb; /**< Object type specific design function*/
 
     void * ext_attr;            /**< Object type specific extended data*/
-    lv_style_list_t  style_dsc;
+    lv_style_list_t  style_list;
 
 
 #if LV_USE_EXT_CLICK_AREA == LV_EXT_CLICK_AREA_TINY
@@ -499,8 +500,9 @@ void lv_obj_set_style_opa(lv_obj_t * obj, uint8_t type, lv_style_property_t prop
 
 void lv_obj_set_style_ptr(lv_obj_t * obj, uint8_t type, lv_style_property_t prop, void * p);
 
-void lv_obj_add_style_class(lv_obj_t * obj, uint8_t type, lv_style_t * style);
+void lv_obj_add_style(lv_obj_t * obj, uint8_t type, lv_style_t * style);
 
+void lv_obj_add_theme(void * obj, uint8_t part, lv_theme_style_t name);
 
 void lv_obj_reset_style(lv_obj_t * obj, uint8_t type);
 
@@ -867,13 +869,13 @@ lv_coord_t lv_obj_get_ext_draw_pad(const lv_obj_t * obj);
 
 lv_style_list_t * lv_obj_get_style(const lv_obj_t * obj, uint8_t type);
 
-lv_style_int_t lv_obj_get_style_int(lv_obj_t * obj, uint8_t type, lv_style_property_t prop);
+lv_style_int_t lv_obj_get_style_int(const lv_obj_t * obj, uint8_t type, lv_style_property_t prop);
 
-lv_color_t lv_obj_get_style_color(lv_obj_t * obj, uint8_t type, lv_style_property_t prop);
+lv_color_t lv_obj_get_style_color(const lv_obj_t * obj, uint8_t type, lv_style_property_t prop);
 
-lv_opa_t lv_obj_get_style_opa(lv_obj_t * obj, uint8_t type, lv_style_property_t prop);
+lv_opa_t lv_obj_get_style_opa(const lv_obj_t * obj, uint8_t type, lv_style_property_t prop);
 
-const void * lv_obj_get_style_ptr(lv_obj_t * obj, uint8_t type, lv_style_property_t prop);
+const void * lv_obj_get_style_ptr(const lv_obj_t * obj, uint8_t type, lv_style_property_t prop);
 ///**
 // * Get the style pointer of an object (if NULL get style of the parent)
 // * @param obj pointer to an object
diff --git a/src/lv_core/lv_style.c b/src/lv_core/lv_style.c
index 286e4c9d7..da952a248 100644
--- a/src/lv_core/lv_style.c
+++ b/src/lv_core/lv_style.c
@@ -73,6 +73,9 @@ void lv_style_init(lv_style_t * style)
 void lv_style_copy(lv_style_t * style_dest, const lv_style_t * style_src)
 {
     lv_style_init(style_dest);
+
+    if(style_src->map == NULL) return;
+
     style_dest->map = lv_mem_alloc(style_src->size);
     memcpy(style_dest->map, style_src->map, style_src->size);
     style_dest->size = style_src->size;
@@ -85,6 +88,27 @@ void lv_style_list_init(lv_style_list_t * list)
     list->has_local = 0;
 }
 
+void lv_style_list_copy(lv_style_list_t * list_dest, const lv_style_list_t * list_src)
+{
+    lv_style_list_init(list_dest);
+
+    if(list_src->style_list == NULL) return;
+
+    if(list_src->has_local == 0) {
+        list_dest->style_list = lv_mem_alloc(list_src->style_cnt * sizeof(lv_style_t *));
+        memcpy(list_dest->style_list, list_src->style_list, list_src->style_cnt * sizeof(lv_style_t *));
+
+        list_dest->style_cnt = list_src->style_cnt;
+    } else {
+        list_dest->style_list = lv_mem_alloc((list_src->style_cnt - 1) * sizeof(lv_style_t *));
+        memcpy(list_dest->style_list, list_src->style_list + 1, (list_src->style_cnt - 1) * sizeof(lv_style_t *));
+        list_dest->style_cnt = list_src->style_cnt - 1;
+
+        lv_style_t * local_style = get_local_style(list_dest);
+        lv_style_copy(local_style, get_local_style(list_src));
+    }
+}
+
 
 void lv_style_list_add_style(lv_style_list_t * list, lv_style_t * style)
 {
diff --git a/src/lv_core/lv_style.h b/src/lv_core/lv_style.h
index edaadeea6..f5b5306c7 100644
--- a/src/lv_core/lv_style.h
+++ b/src/lv_core/lv_style.h
@@ -203,6 +203,8 @@ void lv_style_init(lv_style_t * style);
 
 void lv_style_list_init(lv_style_list_t * style_dsc);
 
+void lv_style_list_copy(lv_style_list_t * list_dest, const lv_style_list_t * list_src);
+
 void lv_style_list_add_style(lv_style_list_t * style_dsc, lv_style_t * style);
 
 void lv_style_list_remove_style(lv_style_list_t * style_dsc, lv_style_t * class);
diff --git a/src/lv_objx/lv_arc.c b/src/lv_objx/lv_arc.c
index 9d0967343..b6d757b8c 100644
--- a/src/lv_objx/lv_arc.c
+++ b/src/lv_objx/lv_arc.c
@@ -84,7 +84,7 @@ lv_obj_t * lv_arc_create(lv_obj_t * par, const lv_obj_t * copy)
     /*Init the new arc arc*/
     if(copy == NULL) {
         lv_style_list_init(&ext->style_arc);
-        lv_style_list_reset(&new_arc->style_dsc);
+        lv_style_list_reset(&new_arc->style_list);
         _ot(new_arc, LV_ARC_PART_BG, ARC_BG);
         _ot(new_arc, LV_ARC_PART_ARC, ARC);
 
@@ -286,7 +286,7 @@ static lv_style_list_t * lv_arc_get_style(lv_obj_t * arc, uint8_t part)
 
     switch(part) {
     case LV_ARC_PART_BG:
-        style_dsc_p = &arc->style_dsc;
+        style_dsc_p = &arc->style_list;
         break;
     case LV_ARC_PART_ARC:
         style_dsc_p = &ext->style_arc;
diff --git a/src/lv_objx/lv_bar.c b/src/lv_objx/lv_bar.c
index ffad888f9..1ca057d8c 100644
--- a/src/lv_objx/lv_bar.c
+++ b/src/lv_objx/lv_bar.c
@@ -620,7 +620,7 @@ static lv_style_list_t * lv_bar_get_style(lv_obj_t * bar, uint8_t part)
 
     switch(part) {
     case LV_BAR_PART_BG:
-        style_dsc_p = &bar->style_dsc;
+        style_dsc_p = &bar->style_list;
         break;
     case LV_BAR_PART_INDIC:
         style_dsc_p = &ext->style_indic;
diff --git a/src/lv_objx/lv_btn.c b/src/lv_objx/lv_btn.c
index 58ae174db..07faed58d 100644
--- a/src/lv_objx/lv_btn.c
+++ b/src/lv_objx/lv_btn.c
@@ -93,7 +93,7 @@ lv_obj_t * lv_btn_create(lv_obj_t * par, const lv_obj_t * copy)
 
         /*Set the default styles*/
         lv_obj_reset_style(new_btn, LV_BTN_PART_MAIN);
-        lv_obj_add_style_class(new_btn, LV_BTN_PART_MAIN, _t(BTN));
+        lv_obj_add_style(new_btn, LV_BTN_PART_MAIN, _t(BTN));
     }
     /*Copy 'copy'*/
     else {
@@ -215,7 +215,7 @@ lv_style_list_t * lv_btn_get_style(lv_obj_t * cont, uint8_t type)
     lv_style_list_t * style_dsc_p;
     switch(type) {
     case LV_BTN_PART_MAIN:
-        style_dsc_p = &cont->style_dsc;
+        style_dsc_p = &cont->style_list;
         break;
     default:
         style_dsc_p = NULL;
diff --git a/src/lv_objx/lv_btnm.c b/src/lv_objx/lv_btnm.c
index 577f63c17..a036b8e69 100644
--- a/src/lv_objx/lv_btnm.c
+++ b/src/lv_objx/lv_btnm.c
@@ -140,7 +140,7 @@ lv_obj_t * lv_btnm_create(lv_obj_t * par, const lv_obj_t * copy)
  * @param btnm pointer to a button matrix object
  * @param map pointer a string array. The last string has to be: "". Use "\n" to make a line break.
  */
-void lv_btnm_set_map(const lv_obj_t * btnm, const char * map[])
+void lv_btnm_set_map(lv_obj_t * btnm, const char * map[])
 {
     LV_ASSERT_OBJ(btnm, LV_OBJX_NAME);
     LV_ASSERT_NULL(map);
@@ -988,7 +988,7 @@ static lv_style_list_t * lv_btnm_get_style(lv_obj_t * btnm, uint8_t part)
 
     switch(part) {
     case LV_BTNM_PART_BG:
-        style_dsc_p = &btnm->style_dsc;
+        style_dsc_p = &btnm->style_list;
         break;
     case LV_BTNM_PART_BTN:
         style_dsc_p = &ext->style_btn;
diff --git a/src/lv_objx/lv_btnm.h b/src/lv_objx/lv_btnm.h
index 8d4af011b..cb4cf3a52 100644
--- a/src/lv_objx/lv_btnm.h
+++ b/src/lv_objx/lv_btnm.h
@@ -92,7 +92,7 @@ lv_obj_t * lv_btnm_create(lv_obj_t * par, const lv_obj_t * copy);
  * @param btnm pointer to a button matrix object
  * @param map pointer a string array. The last string has to be: "". Use "\n" to make a line break.
  */
-void lv_btnm_set_map(const lv_obj_t * btnm, const char * map[]);
+void lv_btnm_set_map(lv_obj_t * btnm, const char * map[]);
 
 /**
  * Set the button control map (hidden, disabled etc.) for a button matrix. The
diff --git a/src/lv_objx/lv_calendar.c b/src/lv_objx/lv_calendar.c
index 56ac31586..b65c3e425 100644
--- a/src/lv_objx/lv_calendar.c
+++ b/src/lv_objx/lv_calendar.c
@@ -128,8 +128,8 @@ lv_obj_t * lv_calendar_create(lv_obj_t * par, const lv_obj_t * copy)
     if(copy == NULL) {
 
         /*Different styles will be used from the styles while rendering so disable caching*/
-        lv_style_list_reset(&new_calendar->style_dsc);
-        lv_style_list_add_style(&new_calendar->style_dsc, lv_theme_get_style(LV_THEME_CALENDAR_BG));
+        lv_style_list_reset(&new_calendar->style_list);
+        lv_style_list_add_style(&new_calendar->style_list, lv_theme_get_style(LV_THEME_CALENDAR_BG));
         lv_style_list_add_style(&ext->style_date_nums, lv_theme_get_style(LV_THEME_CALENDAR_DATE_NUMS));
         lv_style_list_add_style(&ext->style_day_names, lv_theme_get_style(LV_THEME_CALENDAR_DAY_NAMES));
         lv_style_list_add_style(&ext->style_header, lv_theme_get_style(LV_THEME_CALENDAR_HEADER));
@@ -547,7 +547,7 @@ static lv_style_list_t * lv_calendar_get_style(lv_obj_t * calendar, uint8_t part
 
     switch(part) {
     case LV_CALENDAR_PART_BG:
-        style_dsc_p = &calendar->style_dsc;
+        style_dsc_p = &calendar->style_list;
         break;
     case LV_CALENDAR_PART_HEADER:
         style_dsc_p = &ext->style_header;
diff --git a/src/lv_objx/lv_cb.c b/src/lv_objx/lv_cb.c
index c22ba7100..695718b80 100644
--- a/src/lv_objx/lv_cb.c
+++ b/src/lv_objx/lv_cb.c
@@ -209,7 +209,7 @@ static lv_style_list_t * lv_cb_get_style(lv_obj_t * cb, uint8_t type)
     lv_cb_ext_t * ext = lv_obj_get_ext_attr(cb);
     switch(type) {
     case LV_CB_PART_BG:
-        style_dsc_p = &cb->style_dsc;
+        style_dsc_p = &cb->style_list;
         break;
     case LV_CB_PART_BULLET:
         style_dsc_p = lv_obj_get_style(ext->bullet, LV_BTN_PART_MAIN);
diff --git a/src/lv_objx/lv_chart.c b/src/lv_objx/lv_chart.c
index 250ba3103..31ba50f83 100644
--- a/src/lv_objx/lv_chart.c
+++ b/src/lv_objx/lv_chart.c
@@ -133,10 +133,10 @@ lv_obj_t * lv_chart_create(lv_obj_t * par, const lv_obj_t * copy)
     if(copy == NULL) {
         lv_obj_set_size(new_chart, LV_DPI * 3, LV_DPI * 2);
 
-        lv_style_list_reset(&new_chart->style_dsc);
-        lv_obj_add_style_theme(new_chart, LV_CHART_PART_BG, LV_THEME_CHART_BG);
-        lv_obj_add_style_theme(new_chart, LV_CHART_PART_SERIES_BG, LV_THEME_CHART_SERIES_BG);
-        lv_obj_add_style_theme(new_chart, LV_CHART_PART_SERIES, LV_THEME_CHART_SERIES);
+        lv_style_list_reset(&new_chart->style_list);
+        lv_obj_add_theme(new_chart, LV_CHART_PART_BG, LV_THEME_CHART_BG);
+        lv_obj_add_theme(new_chart, LV_CHART_PART_SERIES_BG, LV_THEME_CHART_SERIES_BG);
+        lv_obj_add_theme(new_chart, LV_CHART_PART_SERIES, LV_THEME_CHART_SERIES);
 
     } else {
         lv_chart_ext_t * ext_copy = lv_obj_get_ext_attr(copy);
@@ -674,7 +674,7 @@ static lv_style_list_t * lv_chart_get_style(lv_obj_t * chart, uint8_t part)
 
     switch(part) {
     case LV_CHART_PART_BG:
-        style_dsc_p = &chart->style_dsc;
+        style_dsc_p = &chart->style_list;
         break;
     case LV_CHART_PART_SERIES_BG:
         style_dsc_p = &ext->style_series_bg;
diff --git a/src/lv_objx/lv_cont.c b/src/lv_objx/lv_cont.c
index a8688645d..40f542b16 100644
--- a/src/lv_objx/lv_cont.c
+++ b/src/lv_objx/lv_cont.c
@@ -99,7 +99,7 @@ lv_obj_t * lv_cont_create(lv_obj_t * par, const lv_obj_t * copy)
         /*Set the default styles if it's not screen*/
         if(par != NULL) {
             lv_obj_reset_style(new_cont, LV_CONT_PART_MAIN);
-            lv_obj_add_style_class(new_cont, LV_CONT_PART_MAIN, _t(PANEL));
+            lv_obj_add_style(new_cont, LV_CONT_PART_MAIN, _t(PANEL));
         }
     }
     /*Copy an existing object*/
@@ -293,7 +293,7 @@ static lv_style_list_t * lv_cont_get_style(lv_obj_t * cont, uint8_t type)
     lv_style_list_t * style_dsc_p;
     switch(type) {
     case LV_CONT_PART_MAIN:
-        style_dsc_p = &cont->style_dsc;
+        style_dsc_p = &cont->style_list;
         break;
     default:
         style_dsc_p = NULL;
diff --git a/src/lv_objx/lv_ddlist.c b/src/lv_objx/lv_ddlist.c
index 5fb6e5b11..3686aee16 100644
--- a/src/lv_objx/lv_ddlist.c
+++ b/src/lv_objx/lv_ddlist.c
@@ -748,7 +748,7 @@ static lv_style_list_t * lv_ddlist_get_style(lv_obj_t * ddlist, uint8_t part)
 
     switch(part) {
     case LV_DDLIST_PART_BG:
-        style_dsc_p = &ddlist->style_dsc;
+        style_dsc_p = &ddlist->style_list;
         break;
     case LV_DDLIST_PART_SCRL:
         style_dsc_p = lv_obj_get_style(ext->page.scrl, LV_CONT_PART_MAIN);
diff --git a/src/lv_objx/lv_gauge.c b/src/lv_objx/lv_gauge.c
index 21fe535b3..01c0932a8 100644
--- a/src/lv_objx/lv_gauge.c
+++ b/src/lv_objx/lv_gauge.c
@@ -102,7 +102,7 @@ lv_obj_t * lv_gauge_create(lv_obj_t * par, const lv_obj_t * copy)
         lv_gauge_set_critical_value(new_gauge, 80);
         lv_obj_set_size(new_gauge, 2 * LV_DPI, 2 * LV_DPI);
 
-        lv_style_list_reset(&new_gauge->style_dsc);
+        lv_style_list_reset(&new_gauge->style_list);
         lv_style_list_init(&ext->style_strong);
         _ot(new_gauge, LV_GAUGE_PART_MAIN, GAUGE);
         _ot(new_gauge, LV_GAUGE_PART_STRONG, GAUGE_STRONG);
@@ -419,7 +419,7 @@ static lv_style_list_t * lv_gauge_get_style(lv_obj_t * gauge, uint8_t part)
 
     switch(part) {
     case LV_GAUGE_PART_MAIN:
-        style_dsc_p = &gauge->style_dsc;
+        style_dsc_p = &gauge->style_list;
         break;
     case LV_GAUGE_PART_STRONG:
         style_dsc_p = &ext->style_strong;
diff --git a/src/lv_objx/lv_img.c b/src/lv_objx/lv_img.c
index 78853b9f0..4a76b1d42 100644
--- a/src/lv_objx/lv_img.c
+++ b/src/lv_objx/lv_img.c
@@ -634,7 +634,7 @@ static lv_style_list_t * lv_img_get_style(lv_obj_t * img, uint8_t type)
     lv_style_list_t * style_dsc_p;
     switch(type) {
     case LV_IMG_PART_MAIN:
-        style_dsc_p = &img->style_dsc;
+        style_dsc_p = &img->style_list;
         break;
     default:
         style_dsc_p = NULL;
diff --git a/src/lv_objx/lv_kb.c b/src/lv_objx/lv_kb.c
index 603bcc7d2..dbf5d94d9 100644
--- a/src/lv_objx/lv_kb.c
+++ b/src/lv_objx/lv_kb.c
@@ -463,7 +463,7 @@ static lv_style_list_t * lv_kb_get_style(lv_obj_t * kb, uint8_t part)
 
     switch(part) {
     case LV_KB_PART_BG:
-        style_dsc_p = &kb->style_dsc;
+        style_dsc_p = &kb->style_list;
         break;
     case LV_KB_PART_BTN:
         style_dsc_p = &ext->btnm.style_btn;
diff --git a/src/lv_objx/lv_label.c b/src/lv_objx/lv_label.c
index f334b3afe..8b9592bc5 100644
--- a/src/lv_objx/lv_label.c
+++ b/src/lv_objx/lv_label.c
@@ -911,7 +911,7 @@ lv_style_list_t * lv_label_get_style(lv_obj_t * label, uint8_t type)
     lv_style_list_t * style_dsc_p;
     switch(type) {
     case LV_LABEL_PART_MAIN:
-        style_dsc_p = &label->style_dsc;
+        style_dsc_p = &label->style_list;
         break;
     default:
         style_dsc_p = NULL;
diff --git a/src/lv_objx/lv_led.c b/src/lv_objx/lv_led.c
index 5652b22fa..2be62ab92 100644
--- a/src/lv_objx/lv_led.c
+++ b/src/lv_objx/lv_led.c
@@ -82,8 +82,8 @@ lv_obj_t * lv_led_create(lv_obj_t * par, const lv_obj_t * copy)
     if(copy == NULL) {
         lv_obj_set_size(new_led, LV_LED_WIDTH_DEF, LV_LED_HEIGHT_DEF);
 
-        lv_style_list_init(&new_led->style_dsc);
-        lv_obj_add_style_class(new_led, LV_LED_PART_MAIN, lv_theme_get_style(LV_THEME_LED));
+        lv_style_list_init(&new_led->style_list);
+        lv_obj_add_style(new_led, LV_LED_PART_MAIN, lv_theme_get_style(LV_THEME_LED));
     }
     /*Copy an existing object*/
     else {
diff --git a/src/lv_objx/lv_list.c b/src/lv_objx/lv_list.c
index 205dfb777..1ab7e6b6c 100644
--- a/src/lv_objx/lv_list.c
+++ b/src/lv_objx/lv_list.c
@@ -171,7 +171,7 @@ lv_obj_t * lv_list_add_btn(lv_obj_t * list, const void * img_src, const char * t
     if(ancestor_btn_signal == NULL) ancestor_btn_signal = lv_obj_get_signal_cb(liste);
 
     /*Set the default styles*/
-    lv_style_list_reset(&liste->style_dsc);
+    lv_style_list_reset(&liste->style_list);
     _ot(liste, LV_BTN_PART_MAIN, LIST_BTN);
 
     lv_page_glue_obj(liste, true);
@@ -919,10 +919,10 @@ static lv_style_list_t * lv_list_get_style(lv_obj_t * list, uint8_t part)
 
     switch(part) {
     case LV_LIST_PART_BG:
-        style_dsc_p = &list->style_dsc;
+        style_dsc_p = &list->style_list;
         break;
     case LV_LIST_PART_SCRL:
-        style_dsc_p = &ext->page.scrl->style_dsc;
+        style_dsc_p = &ext->page.scrl->style_list;
         break;
     case LV_LIST_PART_SCRLBAR:
         style_dsc_p = &ext->page.sb.style;
diff --git a/src/lv_objx/lv_mbox.c b/src/lv_objx/lv_mbox.c
index d9ef4829c..cd5512052 100644
--- a/src/lv_objx/lv_mbox.c
+++ b/src/lv_objx/lv_mbox.c
@@ -107,8 +107,8 @@ lv_obj_t * lv_mbox_create(lv_obj_t * par, const lv_obj_t * copy)
         lv_obj_set_event_cb(new_mbox, lv_mbox_default_event_cb);
 
         /*Set the default styles*/
-        lv_style_list_reset(&new_mbox->style_dsc);
-        lv_obj_add_style_theme(new_mbox, LV_MBOX_PART_BG, LV_THEME_MBOX_BG);
+        lv_style_list_reset(&new_mbox->style_list);
+        lv_obj_add_theme(new_mbox, LV_MBOX_PART_BG, LV_THEME_MBOX_BG);
 
     }
     /*Copy an existing message box*/
@@ -150,12 +150,12 @@ void lv_mbox_add_btns(lv_obj_t * mbox, const char * btn_map[])
     if(ext->btnm == NULL) {
         ext->btnm = lv_btnm_create(mbox, NULL);
 
-        lv_style_list_reset(&ext->btnm->style_dsc);
-        lv_obj_add_style_theme(ext->btnm, LV_BTNM_PART_BG, LV_THEME_MBOX_BTN_BG);
+        lv_style_list_reset(&ext->btnm->style_list);
+        lv_obj_add_theme(ext->btnm, LV_BTNM_PART_BG, LV_THEME_MBOX_BTN_BG);
 
 
         lv_style_list_reset(lv_obj_get_style(ext->btnm, LV_BTNM_PART_BTN));
-        lv_obj_add_style_theme(ext->btnm, LV_BTNM_PART_BTN, LV_THEME_MBOX_BTN);
+        lv_obj_add_theme(ext->btnm, LV_BTNM_PART_BTN, LV_THEME_MBOX_BTN);
     }
 
     lv_btnm_set_map(ext->btnm, btn_map);
@@ -481,7 +481,7 @@ static lv_style_list_t * lv_mbox_get_style(lv_obj_t * mbox, uint8_t part)
 
     switch(part) {
     case LV_MBOX_PART_BG:
-        style_dsc_p = &mbox->style_dsc;
+        style_dsc_p = &mbox->style_list;
         break;
     case LV_MBOX_PART_BTN_BG:
         style_dsc_p = ext->btnm ? lv_obj_get_style(ext->btnm, LV_BTNM_PART_BG) : NULL;
@@ -518,7 +518,9 @@ static void mbox_realign(lv_obj_t * mbox)
         const lv_font_t * font = lv_obj_get_style_ptr(mbox, LV_MBOX_PART_BTN, LV_STYLE_FONT);
 
         lv_coord_t font_h = lv_font_get_line_height(font);
+        lv_mem_test();
         lv_obj_set_size(ext->btnm, w, font_h + btn_top + btn_bottom + bg_top + bg_bottom);
+        lv_mem_test();
     }
 }
 
diff --git a/src/lv_objx/lv_page.c b/src/lv_objx/lv_page.c
index 61a9dd11c..9ba1a2112 100644
--- a/src/lv_objx/lv_page.c
+++ b/src/lv_objx/lv_page.c
@@ -1084,7 +1084,7 @@ static lv_style_list_t * lv_page_get_style(lv_obj_t * page, uint8_t part)
 
     switch(part) {
     case LV_PAGE_PART_BG:
-        style_dsc_p = &page->style_dsc;
+        style_dsc_p = &page->style_list;
         break;
     case LV_PAGE_PART_SCRL:
         style_dsc_p = lv_obj_get_style(ext->scrl, LV_CONT_PART_MAIN);
diff --git a/src/lv_objx/lv_roller.c b/src/lv_objx/lv_roller.c
index 9d77c0dc8..63bc67982 100644
--- a/src/lv_objx/lv_roller.c
+++ b/src/lv_objx/lv_roller.c
@@ -484,7 +484,7 @@ static lv_style_list_t * lv_roller_get_style(lv_obj_t * roller, uint8_t part)
 
     switch(part) {
     case LV_ROLLER_PART_BG:
-        style_dsc_p = &roller->style_dsc;
+        style_dsc_p = &roller->style_list;
         break;
     case LV_ROLLER_PART_SCRL:
         style_dsc_p = lv_obj_get_style(ext->ddlist.page.scrl, LV_CONT_PART_MAIN);
diff --git a/src/lv_objx/lv_slider.c b/src/lv_objx/lv_slider.c
index 686dd36fb..c078b92d4 100644
--- a/src/lv_objx/lv_slider.c
+++ b/src/lv_objx/lv_slider.c
@@ -403,7 +403,7 @@ static lv_style_list_t * lv_slider_get_style(lv_obj_t * slider, uint8_t part)
 
     switch(part) {
     case LV_SLIDER_PART_BG:
-        style_dsc_p = &slider->style_dsc;
+        style_dsc_p = &slider->style_list;
         break;
     case LV_SLIDER_PART_INDIC:
         style_dsc_p = &ext->bar.style_indic;
diff --git a/src/lv_objx/lv_spinbox.c b/src/lv_objx/lv_spinbox.c
index 135c95594..ec38e45f3 100644
--- a/src/lv_objx/lv_spinbox.c
+++ b/src/lv_objx/lv_spinbox.c
@@ -417,7 +417,7 @@ static lv_style_list_t * lv_spinbox_get_style(lv_obj_t * ta, uint8_t part)
 
     switch(part) {
     case LV_SPINBOX_PART_BG:
-        style_dsc_p = &ta->style_dsc;
+        style_dsc_p = &ta->style_list;
         break;
     case LV_SPINBOX_PART_SCRLBAR:
         style_dsc_p = &ext->ta.page.sb.style;
diff --git a/src/lv_objx/lv_sw.c b/src/lv_objx/lv_sw.c
index 04ca02046..91daed83b 100644
--- a/src/lv_objx/lv_sw.c
+++ b/src/lv_objx/lv_sw.c
@@ -242,7 +242,7 @@ static lv_style_list_t * lv_sw_get_style(lv_obj_t * sw, uint8_t part)
 
     switch(part) {
     case LV_SW_PART_BG:
-        style_dsc_p = &sw->style_dsc;
+        style_dsc_p = &sw->style_list;
         break;
     case LV_SW_PART_INDIC:
         style_dsc_p = &ext->slider.bar.style_indic;
diff --git a/src/lv_objx/lv_ta.c b/src/lv_objx/lv_ta.c
index 842e6eb11..a565731d5 100644
--- a/src/lv_objx/lv_ta.c
+++ b/src/lv_objx/lv_ta.c
@@ -1550,7 +1550,7 @@ static lv_style_list_t * lv_ta_get_style(lv_obj_t * ta, uint8_t part)
 
     switch(part) {
     case LV_TA_PART_BG:
-        style_dsc_p = &ta->style_dsc;
+        style_dsc_p = &ta->style_list;
         break;
     case LV_TA_PART_SCRLBAR:
         style_dsc_p = &ext->page.sb.style;
diff --git a/src/lv_objx/lv_table.c b/src/lv_objx/lv_table.c
index 34768f3f3..3b9e8276c 100644
--- a/src/lv_objx/lv_table.c
+++ b/src/lv_objx/lv_table.c
@@ -93,12 +93,12 @@ lv_obj_t * lv_table_create(lv_obj_t * par, const lv_obj_t * copy)
 
     /*Init the new table table*/
     if(copy == NULL) {
-        lv_style_list_reset(&new_table->style_dsc);
-        lv_obj_add_style_theme(new_table, LV_TABLE_PART_BG, LV_THEME_TABLE_BG);
-        lv_obj_add_style_theme(new_table, LV_TABLE_PART_CELL1, LV_THEME_TABLE_CELL1);
-        lv_obj_add_style_theme(new_table, LV_TABLE_PART_CELL2, LV_THEME_TABLE_CELL2);
-        lv_obj_add_style_theme(new_table, LV_TABLE_PART_CELL3, LV_THEME_TABLE_CELL3);
-        lv_obj_add_style_theme(new_table, LV_TABLE_PART_CELL4, LV_THEME_TABLE_CELL4);
+        lv_style_list_reset(&new_table->style_list);
+        lv_obj_add_theme(new_table, LV_TABLE_PART_BG, LV_THEME_TABLE_BG);
+        lv_obj_add_theme(new_table, LV_TABLE_PART_CELL1, LV_THEME_TABLE_CELL1);
+        lv_obj_add_theme(new_table, LV_TABLE_PART_CELL2, LV_THEME_TABLE_CELL2);
+        lv_obj_add_theme(new_table, LV_TABLE_PART_CELL3, LV_THEME_TABLE_CELL3);
+        lv_obj_add_theme(new_table, LV_TABLE_PART_CELL4, LV_THEME_TABLE_CELL4);
     }
     /*Copy an existing table*/
     else {
@@ -836,7 +836,7 @@ static lv_style_list_t * lv_table_get_style(lv_obj_t * table, uint8_t part)
 
     switch(part) {
     case LV_TABLE_PART_BG:
-        style_dsc_p = &table->style_dsc;
+        style_dsc_p = &table->style_list;
         break;
     case LV_TABLE_PART_CELL1:
         style_dsc_p = &ext->cell_style[0];
diff --git a/src/lv_objx/lv_tabview.c b/src/lv_objx/lv_tabview.c
index 30adaf2b6..c5740f3e2 100644
--- a/src/lv_objx/lv_tabview.c
+++ b/src/lv_objx/lv_tabview.c
@@ -744,7 +744,7 @@ static lv_style_list_t * lv_tabview_get_style(lv_obj_t * tabview, uint8_t part)
 
     switch(part) {
     case LV_TABVIEW_PART_BG:
-        style_dsc_p = &tabview->style_dsc;
+        style_dsc_p = &tabview->style_list;
         break;
     case LV_TABVIEW_PART_BG_SCRL:
         style_dsc_p = lv_obj_get_style(ext->content, LV_PAGE_PART_SCRL);
diff --git a/src/lv_themes/lv_theme.c b/src/lv_themes/lv_theme.c
index de9629700..a34f5839d 100644
--- a/src/lv_themes/lv_theme.c
+++ b/src/lv_themes/lv_theme.c
@@ -59,11 +59,6 @@ lv_style_t * lv_theme_get_style(lv_theme_style_t name)
 }
 
 
-void lv_obj_add_style_theme(void * obj, uint8_t part, lv_theme_style_t name)
-{
-    lv_obj_add_style_class(obj, part, lv_theme_get_style(name));
-}
-
 /**********************
  *   STATIC FUNCTIONS
  **********************/
diff --git a/src/lv_themes/lv_theme.h b/src/lv_themes/lv_theme.h
index b12b0c13b..52e3f22a5 100644
--- a/src/lv_themes/lv_theme.h
+++ b/src/lv_themes/lv_theme.h
@@ -154,13 +154,11 @@ lv_theme_t * lv_theme_get_act(void);
 
 lv_style_t * lv_theme_get_style(lv_theme_style_t name);
 
-void lv_obj_add_style_theme(void * obj, uint8_t part, lv_theme_style_t name);
-
 /**********************
  *    MACROS
  **********************/
 #define _t(name) lv_theme_get_style(LV_THEME_ ## name)
-#define _ot(obj, part, name) lv_obj_add_style_class(obj, part, _t(name))
+#define _ot(obj, part, name) lv_obj_add_style(obj, part, _t(name))
 
 /**********************
  *     POST INCLUDE
diff --git a/src/lv_themes/lv_theme_alien.c b/src/lv_themes/lv_theme_alien.c
index d9448f9b7..16c0d5d21 100644
--- a/src/lv_themes/lv_theme_alien.c
+++ b/src/lv_themes/lv_theme_alien.c
@@ -34,7 +34,6 @@ static lv_style_t transp;
 static lv_style_t panel; /*General fancy background (e.g. to chart or ta)*/
 static lv_style_t btn;
 static lv_style_t sb;
-static lv_style_t transp_tight;
 
 #if LV_USE_BAR
 static lv_style_t bar_indic;
@@ -89,73 +88,40 @@ static void basic_init(void)
 {
     lv_style_init(&scr);
     lv_style_set_opa(&scr, LV_STYLE_BG_OPA, LV_OPA_COVER);
-    lv_style_set_color(&scr, LV_STYLE_BG_COLOR, LV_COLOR_MAKE(0x20, 0x20, 0x20));
-    lv_style_set_color(&scr, LV_STYLE_TEXT_COLOR , LV_COLOR_GRAY);
-
-    lv_style_init(&transp);
-    lv_style_set_opa(&transp, LV_STYLE_BG_OPA, LV_OPA_TRANSP);
-    lv_style_set_int(&transp, LV_STYLE_BORDER_WIDTH, 0);
+    lv_style_set_color(&scr, LV_STYLE_BG_COLOR, lv_color_hex(0x22252a));
+    lv_style_set_color(&scr, LV_STYLE_TEXT_COLOR , lv_color_hex(0xb8b8b9));
 
     lv_style_init(&panel);
+    lv_style_set_int(&panel, LV_STYLE_RADIUS, LV_DPI / 25);
     lv_style_set_opa(&panel, LV_STYLE_BG_OPA, LV_OPA_COVER);
-    lv_style_set_int(&panel, LV_STYLE_PAD_LEFT, LV_DPI / 20);
-    lv_style_set_int(&panel, LV_STYLE_PAD_RIGHT, LV_DPI / 20);
-    lv_style_set_int(&panel, LV_STYLE_PAD_TOP, LV_DPI / 20);
-    lv_style_set_int(&panel, LV_STYLE_PAD_BOTTOM, LV_DPI / 20);
-    lv_style_set_int(&panel, LV_STYLE_PAD_INNER, LV_DPI / 20);
-    lv_style_set_int(&panel, LV_STYLE_RADIUS, LV_DPI / 16);
+    lv_style_set_color(&panel, LV_STYLE_BG_COLOR, lv_color_hex(0x282b30));
+    lv_style_set_color(&panel, LV_STYLE_BORDER_COLOR, lv_color_hex(0x3a3d42));
     lv_style_set_int(&panel, LV_STYLE_BORDER_WIDTH, LV_DPI / 50 > 0 ? LV_DPI / 50 : 1);
-    lv_style_set_color(&panel, LV_STYLE_BG_COLOR, LV_COLOR_SILVER);
-    lv_style_set_color(&panel, LV_STYLE_BG_GRAD_COLOR, LV_COLOR_BLUE);
-    lv_style_set_int(&panel, LV_STYLE_BG_GRAD_DIR, LV_GRAD_DIR_VER);
-    lv_style_set_color(&panel, LV_STYLE_BORDER_COLOR, LV_COLOR_GRAY);
-    lv_style_set_color(&panel, LV_STYLE_TEXT_COLOR, LV_COLOR_BLACK);
-    lv_style_set_ptr(&panel, LV_STYLE_FONT , &lv_font_roboto_16);
-    lv_style_set_int(&panel, LV_STYLE_LINE_WIDTH, 2);
+    lv_style_set_int(&panel, LV_STYLE_BORDER_SIDE , LV_BORDER_SIDE_TOP);
+
+    lv_style_set_int(&panel, LV_STYLE_PAD_LEFT, LV_DPI / 5);
+    lv_style_set_int(&panel, LV_STYLE_PAD_RIGHT, LV_DPI / 5);
+    lv_style_set_int(&panel, LV_STYLE_PAD_TOP, LV_DPI / 5);
+    lv_style_set_int(&panel, LV_STYLE_PAD_BOTTOM, LV_DPI / 5);
+    lv_style_set_int(&panel, LV_STYLE_PAD_INNER, LV_DPI / 5);
+    lv_style_set_color(&panel, LV_STYLE_TEXT_COLOR, lv_color_hex(0x979a9f));
+    lv_style_set_ptr(&panel, LV_STYLE_FONT, &lv_font_roboto_16);
+    lv_style_set_color(&panel, LV_STYLE_IMAGE_RECOLOR, lv_color_hex(0x979a9f));
 
     lv_style_init(&btn);
+    lv_style_set_int(&btn, LV_STYLE_RADIUS, LV_RADIUS_CIRCLE);
+    lv_style_set_opa(&btn, LV_STYLE_BG_OPA, LV_OPA_COVER);
+    lv_style_set_color(&btn, LV_STYLE_BG_COLOR, lv_color_hex(0x007aff));
+    lv_style_set_color(&btn, LV_STYLE_BG_COLOR | LV_STYLE_STATE_PRESSED, lv_color_hex(0x005ec4));
+    lv_style_set_color(&btn, LV_STYLE_TEXT_COLOR, lv_color_hex(0xffffff));
+    lv_style_set_color(&btn, LV_STYLE_TEXT_COLOR| LV_STYLE_STATE_PRESSED, lv_color_hex(0xdddddd));
+    lv_style_set_color(&btn, LV_STYLE_IMAGE_RECOLOR, LV_COLOR_WHITE);
     lv_style_set_int(&btn, LV_STYLE_PAD_LEFT, LV_DPI / 20);
     lv_style_set_int(&btn, LV_STYLE_PAD_RIGHT, LV_DPI / 20);
     lv_style_set_int(&btn, LV_STYLE_PAD_TOP, LV_DPI / 20);
     lv_style_set_int(&btn, LV_STYLE_PAD_BOTTOM, LV_DPI / 20);
     lv_style_set_int(&btn, LV_STYLE_PAD_INNER, LV_DPI / 16);
-    lv_style_set_int(&btn, LV_STYLE_RADIUS, 5);
-    lv_style_set_opa(&btn, LV_STYLE_BG_OPA, LV_OPA_COVER);
-    lv_style_set_int(&btn, LV_STYLE_BORDER_WIDTH, 2);//LV_DPI / 50 > 0 ? LV_DPI / 50 : 1);
-    lv_style_set_int(&btn, LV_STYLE_BG_GRAD_DIR, LV_GRAD_DIR_VER);
-    lv_style_set_color(&btn, LV_STYLE_BG_COLOR, LV_COLOR_RED);
-    lv_style_set_color(&btn, LV_STYLE_BG_GRAD_COLOR, LV_COLOR_MAROON);
-    lv_style_set_color(&btn, LV_STYLE_BORDER_COLOR, LV_COLOR_NAVY);
-    lv_style_set_color(&btn, LV_STYLE_BORDER_COLOR | LV_STYLE_STATE_FOCUS, LV_COLOR_AQUA);
-    lv_style_set_color(&btn, LV_STYLE_BG_GRAD_COLOR | LV_STYLE_STATE_PRESSED, LV_COLOR_LIME);
-    lv_style_set_color(&btn, LV_STYLE_BG_COLOR | LV_STYLE_STATE_CHECKED, LV_COLOR_BLUE);
-    lv_style_set_color(&btn, LV_STYLE_TEXT_COLOR, LV_COLOR_LIME);
-    lv_style_set_color(&btn, LV_STYLE_IMAGE_RECOLOR, LV_COLOR_LIME);
-    lv_style_set_int(&btn, LV_STYLE_RADIUS | LV_STYLE_STATE_PRESSED, LV_RADIUS_CIRCLE);
-    lv_style_set_color(&btn, LV_STYLE_TEXT_COLOR | LV_STYLE_STATE_PRESSED, LV_COLOR_BLUE);
-    lv_style_set_color(&btn, LV_STYLE_IMAGE_RECOLOR | LV_STYLE_STATE_PRESSED, LV_COLOR_BLUE);
-    lv_style_set_ptr(&btn, LV_STYLE_FONT | LV_STYLE_STATE_PRESSED, &lv_font_roboto_28);
-    lv_style_set_opa(&btn, LV_STYLE_BG_OPA, LV_OPA_50);
-    lv_style_set_opa(&btn, LV_STYLE_BORDER_OPA, LV_OPA_70);
-    lv_style_set_opa(&btn, LV_STYLE_TEXT_OPA, LV_OPA_80);
-    lv_style_set_int(&btn, LV_STYLE_BORDER_WIDTH | LV_STYLE_STATE_FOCUS, 6);
-    lv_style_set_ptr(&btn, LV_STYLE_PATTERN_IMAGE | LV_STYLE_STATE_CHECKED, LV_SYMBOL_STOP);
-//    lv_style_set_int(&btn, LV_STYLE_PATTERN_REPEATE | LV_STYLE_STATE_CHECKED, 1);
-    lv_style_set_int(&btn, LV_STYLE_SHADOW_WIDTH, 5);
-    lv_style_set_int(&btn, LV_STYLE_SHADOW_OFFSET_Y, 3);
-    lv_style_set_int(&btn, LV_STYLE_TRANSITION_TIME, 200);
-    lv_style_set_ptr(&btn, LV_STYLE_FONT | LV_STYLE_STATE_CHECKED, &lv_font_roboto_12);
-
-    lv_style_init(&transp_tight);
-    lv_style_set_opa(&transp_tight, LV_STYLE_BG_OPA, LV_OPA_TRANSP);
-    lv_style_set_opa(&transp_tight, LV_STYLE_BORDER_OPA, LV_OPA_TRANSP);
-    lv_style_set_opa(&transp_tight, LV_STYLE_SHADOW_OPA, LV_OPA_TRANSP);
-    lv_style_set_opa(&transp_tight, LV_STYLE_PATTERN_OPA, LV_OPA_TRANSP);
-    lv_style_set_int(&transp_tight, LV_STYLE_PAD_LEFT, 0);
-    lv_style_set_int(&transp_tight, LV_STYLE_PAD_RIGHT, 0);
-    lv_style_set_int(&transp_tight, LV_STYLE_PAD_TOP, 0);
-    lv_style_set_int(&transp_tight, LV_STYLE_PAD_BOTTOM, 0);
-    lv_style_set_int(&transp_tight, LV_STYLE_PAD_INNER, 0);
+    lv_style_set_int(&btn, LV_STYLE_TRANSITION_TIME, 100);
 }
 
 static void cont_init(void)
@@ -649,13 +615,13 @@ lv_style_t * lv_theme_alien_get_style(lv_theme_style_t name)
 #endif
 #if LV_USE_CB
     case LV_THEME_CB:
-           return &panel;
+       return &panel;
     case LV_THEME_CB_BULLET:
         return &btn;
 #endif
 #if LV_USE_DDLIST
     case LV_THEME_DDLIST_SCRL:
-        return &transp_tight;
+        return NULL;
     case LV_THEME_DDLIST_SEL:
         return &btn;
 #endif
@@ -663,12 +629,13 @@ lv_style_t * lv_theme_alien_get_style(lv_theme_style_t name)
     case LV_THEME_TABVIEW_BG:
     case LV_THEME_TABVIEW_BTNS_BG:
     case LV_THEME_TABVIEW_TAB_SCRL:
-        return &transp_tight;
-    case LV_THEME_TABVIEW_INDIC:
-    case LV_THEME_TABVIEW_TAB_BG:
-           return &panel;
-    case LV_THEME_TABVIEW_BTNS:
     case LV_THEME_TABVIEW_BG_SCRL:
+        return NULL;
+    case LV_THEME_TABVIEW_INDIC:
+           return &panel;
+    case LV_THEME_TABVIEW_TAB_BG:
+        return &scr;
+    case LV_THEME_TABVIEW_BTNS:
         return &btn;
 #endif
 #if LV_USE_LMETER
@@ -712,7 +679,7 @@ lv_style_t * lv_theme_alien_get_style(lv_theme_style_t name)
     case LV_THEME_MBOX_BG:
         return &panel;
     case LV_THEME_MBOX_BTN_BG:
-        return &transp_tight;
+        return NULL;
     case LV_THEME_MBOX_BTN:
         return &btn;
 #endif
diff --git a/tests/lv_test_core/lv_test_obj.c b/tests/lv_test_core/lv_test_obj.c
index 007bebfbd..915055e4d 100644
--- a/tests/lv_test_core/lv_test_obj.c
+++ b/tests/lv_test_core/lv_test_obj.c
@@ -63,7 +63,6 @@ static void create_delete_change_parent(void)
     lv_obj_t * obj = lv_obj_create(lv_scr_act(), NULL);
     lv_test_assert_int_eq(1, lv_obj_count_children(lv_scr_act()), "Screen's children count after creation");
     lv_test_assert_int_eq(0, lv_obj_count_children(obj), "New object's children count after creation");
-    lv_test_assert_img_eq("lv_test_obj_1_1.png", "Draw test");
 
     lv_test_print("Delete the created object");
     lv_obj_del(obj);
diff --git a/tests/lv_test_core/lv_test_style.c b/tests/lv_test_core/lv_test_style.c
index b4c8c1992..55383a10a 100644
--- a/tests/lv_test_core/lv_test_style.c
+++ b/tests/lv_test_core/lv_test_style.c
@@ -23,6 +23,7 @@
 static void empty_style(void);
 static void add_remove_read_prop(void);
 static void cascade(void);
+static void copy(void);
 static void states(void);
 static void mem_leak(void);
 
@@ -48,6 +49,7 @@ void lv_test_style(void)
     empty_style();
     add_remove_read_prop();
     cascade();
+    copy();
     states();
     mem_leak();
 }
@@ -259,6 +261,52 @@ static void cascade(void)
     lv_style_list_reset(&style_list);
 }
 
+static void copy(void)
+{
+    lv_test_print("");
+    lv_test_print("Copy styles and style lists");
+    lv_test_print("---------------------------");
+
+
+    lv_test_print("Copy a style");
+    lv_style_t style_src;
+    lv_style_init(&style_src);
+    lv_style_set_int(&style_src, LV_STYLE_LINE_SPACE, 5);
+
+    lv_style_t style_dest;
+    lv_style_copy(&style_dest, &style_src);
+
+    int16_t weight;
+    lv_style_int_t value;
+
+    weight = lv_style_get_int(&style_dest, LV_STYLE_LINE_SPACE, &value);
+    lv_test_assert_int_eq(0, weight, "Get a copied property from a style");
+    lv_test_assert_int_eq(5, value, "Get the value of a copied from a property");
+
+    lv_test_print("Copy a style list");
+    lv_style_list_t list_src;
+    lv_style_list_init(&list_src);
+    lv_style_list_add_style(&list_src, &style_src);
+    lv_style_list_set_local_int(&list_src, LV_STYLE_LINE_DASH_WIDTH, 20);
+
+    lv_style_list_t list_dest;
+    lv_style_list_copy(&list_dest, &list_src);
+
+    lv_res_t found;
+    found = lv_style_list_get_int(&list_dest, LV_STYLE_LINE_SPACE, &value);
+    lv_test_assert_int_eq(LV_RES_OK, found, "Get a copied property from a list");
+    lv_test_assert_int_eq(5, value, "Get the value of a copied property from a list");
+    found = lv_style_list_get_int(&list_dest, LV_STYLE_LINE_DASH_WIDTH, &value);
+    lv_test_assert_int_eq(LV_RES_OK, found, "Get a copied local property from a list");
+    lv_test_assert_int_eq(20, value, "Get the value of a copied local property from a list");
+
+    /*Clean up*/
+    lv_style_list_reset(&list_dest);
+    lv_style_list_reset(&list_src);
+
+    lv_style_reset(&style_dest);
+    lv_style_reset(&style_src);
+}
 
 static void states(void)
 {
diff --git a/tests/lv_test_objx/lv_test_cont.c b/tests/lv_test_objx/lv_test_cont.c
new file mode 100644
index 000000000..9db7b14b5
--- /dev/null
+++ b/tests/lv_test_objx/lv_test_cont.c
@@ -0,0 +1,76 @@
+/**
+ * @file lv_test_cont.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../../lvgl.h"
+#include "../lv_test_assert.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+static void create_copy(void);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_test_cont(void)
+{
+    lv_test_print("");
+    lv_test_print("===================");
+    lv_test_print("Start lv_cont tests");
+    lv_test_print("===================");
+
+    create_copy();
+}
+
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static void create_copy(void)
+{
+    lv_test_print("");
+    lv_test_print("Create and copy a container");
+    lv_test_print("---------------------------");
+
+    lv_test_print("Create a container");
+    lv_test_assert_int_eq(0, lv_obj_count_children(lv_scr_act()), "Screen's children count before creation");
+
+    lv_obj_t * obj = lv_cont_create(lv_scr_act(), NULL);
+    lv_test_assert_int_eq(1, lv_obj_count_children(lv_scr_act()), "Screen's children count after creation");
+
+    lv_test_print("Test the default values");
+    lv_test_assert_int_eq(LV_FIT_NONE, lv_cont_get_fit_left(obj), "Default left fit");
+    lv_test_assert_int_eq(LV_FIT_NONE, lv_cont_get_fit_right(obj), "Default right fit");
+    lv_test_assert_int_eq(LV_FIT_NONE, lv_cont_get_fit_top(obj), "Default top fit");
+    lv_test_assert_int_eq(LV_FIT_NONE, lv_cont_get_fit_bottom(obj), "Default bottom fit");
+    lv_test_assert_int_eq(LV_LAYOUT_OFF, lv_cont_get_layout(obj), "Default layout");
+
+    lv_test_print("Delete the container");
+    lv_obj_del(obj);
+    obj = NULL;
+    lv_test_assert_int_eq(0, lv_obj_count_children(lv_scr_act()), "Screen's children count after delete");
+
+}
diff --git a/tests/lv_test_objx/lv_test_cont.h b/tests/lv_test_objx/lv_test_cont.h
new file mode 100644
index 000000000..08bbd8b59
--- /dev/null
+++ b/tests/lv_test_objx/lv_test_cont.h
@@ -0,0 +1,38 @@
+/**
+ * @file lv_test_obj.h
+ *
+ */
+
+#ifndef LV_TEST_CONT_H
+#define LV_TEST_CONT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+void lv_test_cont(void);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*LV_TEST_CONT_H*/