diff --git a/src/lv_draw/lv_draw_arc.c b/src/lv_draw/lv_draw_arc.c
index f77f0c319..7d2e6408b 100644
--- a/src/lv_draw/lv_draw_arc.c
+++ b/src/lv_draw/lv_draw_arc.c
@@ -92,6 +92,12 @@ void lv_draw_arc(lv_coord_t center_x, lv_coord_t center_y, uint16_t radius,  uin
     area.x2 = center_x + radius - 1;  /*-1 because the center already belongs to the left/bottom part*/
     area.y2 = center_y + radius - 1;
 
+    /*Draw a full ring*/
+    if(start_angle + 360 == end_angle) {
+        lv_draw_rect(&area, clip_area, &circle_style, opa_scale);
+        return;
+    }
+
     int32_t angle_gap;
     if(end_angle > start_angle) {
         angle_gap = 360 - (end_angle - start_angle);
diff --git a/src/lv_draw/lv_draw_blend.c b/src/lv_draw/lv_draw_blend.c
index cd6e25c74..0e2378177 100644
--- a/src/lv_draw/lv_draw_blend.c
+++ b/src/lv_draw/lv_draw_blend.c
@@ -326,8 +326,8 @@ static void fill_normal(const lv_area_t * disp_area, lv_color_t * disp_buf,  con
                         } else
 #endif
                         {
-                            if(mask_tmp[x] > LV_OPA_MAX) last_res_color = color;
-                            else if(mask_tmp[x] < LV_OPA_MIN) last_res_color = disp_buf_tmp[x];
+                            if(mask_tmp[x] == LV_OPA_COVER) last_res_color = color;
+                            else if(mask_tmp[x] == LV_OPA_TRANSP) last_res_color = disp_buf_tmp[x];
                             else if(disp_buf_tmp[x].full == color.full) last_res_color = color;
                             else last_res_color = lv_color_mix(color, disp_buf_tmp[x], mask_tmp[x]);
                         }
@@ -346,15 +346,15 @@ static void fill_normal(const lv_area_t * disp_area, lv_color_t * disp_buf,  con
                 for(x = draw_area->x1; x <= draw_area->x2; x++) {
                     if(mask_tmp[x] == 0) continue;
                     if(mask_tmp[x] != last_mask || last_dest_color.full != disp_buf_tmp[x].full) {
-                        lv_opa_t opa_tmp = (uint32_t)((uint32_t)mask_tmp[x] * opa) >> 8;
+                        lv_opa_t opa_tmp = mask_tmp[x] == LV_OPA_COVER ? opa : (uint32_t)((uint32_t)mask_tmp[x] * opa) >> 8;
 #if LV_COLOR_SCREEN_TRANSP
                         if(disp->driver.screen_transp) {
                             lv_color_mix_with_alpha(disp_buf_tmp[x], disp_buf_tmp[x].ch.alpha, color, opa_tmp, &last_res_color, &last_res_color.ch.alpha);
                         } else
 #endif
                         {
-                            if(opa_tmp > LV_OPA_MAX) last_res_color = lv_color_mix(color, disp_buf_tmp[x], mask_tmp[x]);
-                            else if(opa_tmp < LV_OPA_MIN) last_res_color = disp_buf_tmp[x];
+                            if(opa_tmp == LV_OPA_COVER) last_res_color = lv_color_mix(color, disp_buf_tmp[x], mask_tmp[x]);
+                            else if(opa_tmp == LV_OPA_TRANSP) last_res_color = disp_buf_tmp[x];
                             else last_res_color = lv_color_mix(color, disp_buf_tmp[x],opa_tmp);
                         }
                         last_mask = mask_tmp[x];
diff --git a/src/lv_themes/lv_theme_alien.c b/src/lv_themes/lv_theme_alien.c
index 047870420..cb433b714 100644
--- a/src/lv_themes/lv_theme_alien.c
+++ b/src/lv_themes/lv_theme_alien.c
@@ -254,8 +254,8 @@ static void basic_init(void)
 //    lv_style_set_shadow_width(&panel, LV_STYLE_STATE_NORMAL, 5);
 //    lv_style_set_shadow_offset_y(&panel, LV_STYLE_STATE_NORMAL, 3);
 //    lv_style_set_shadow_color(&panel, LV_STYLE_STATE_NORMAL, LV_COLOR_BLUE);
-    lv_style_set_pad_left(&panel, LV_STYLE_STATE_NORMAL, LV_DPI / 20);
-    lv_style_set_pad_right(&panel, LV_STYLE_STATE_NORMAL, LV_DPI / 20);
+    lv_style_set_pad_left(&panel, LV_STYLE_STATE_NORMAL, 3);
+    lv_style_set_pad_right(&panel, LV_STYLE_STATE_NORMAL, 3);
     lv_style_set_pad_top(&panel, LV_STYLE_STATE_NORMAL, LV_DPI / 20);
     lv_style_set_pad_bottom(&panel, LV_STYLE_STATE_NORMAL, LV_DPI / 20);
     lv_style_set_pad_inner(&panel, LV_STYLE_STATE_NORMAL, LV_DPI / 20);
@@ -276,10 +276,10 @@ static void basic_init(void)
     lv_style_set_border_width(&btn, LV_STYLE_STATE_NORMAL, 2);
     lv_style_set_border_opa(&btn, LV_STYLE_STATE_NORMAL, LV_OPA_50);
     lv_style_set_shadow_width(&btn, LV_STYLE_STATE_NORMAL, 10);
-//    lv_style_set_shadow_width(&btn, LV_STYLE_STATE_PRESSED, 2);
-//    lv_style_set_shadow_offset_x(&btn, LV_STYLE_STATE_NORMAL, 35);
+    lv_style_set_shadow_width(&btn, LV_STYLE_STATE_PRESSED, 2);
+    lv_style_set_shadow_offset_x(&btn, LV_STYLE_STATE_NORMAL, -4);
     lv_style_set_shadow_offset_y(&btn, LV_STYLE_STATE_NORMAL, 8);
-    lv_style_set_shadow_offset_y(&btn, LV_STYLE_STATE_PRESSED, 1);
+//    lv_style_set_shadow_offset_y(&btn, LV_STYLE_STATE_PRESSED, 1);
     lv_style_set_shadow_color(&btn, LV_STYLE_STATE_NORMAL, LV_COLOR_BLUE);
 //    lv_style_set_shadow_spread(&btn, LV_STYLE_STATE_NORMAL, 5);
     lv_style_set_text_color(&btn, LV_STYLE_STATE_NORMAL, LV_COLOR_WHITE);