[mobile] adjust control action

app/src/mobile/res/layout/view_control_vod.xml

@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@color/black_20">
+    android:background="@color/black_10">
 
     <LinearLayout
         android:id="@+id/top"

app/src/mobile/res/values/styles.xml

@@ -26,6 +26,10 @@
         <item name="android:layout_height">wrap_content</item>
         <item name="android:background">?attr/selectableItemBackgroundBorderless</item>
         <item name="android:layout_marginEnd">16dp</item>
+        <item name="android:shadowColor">@color/grey_200</item>
+        <item name="android:shadowDx">1</item>
+        <item name="android:shadowDy">1</item>
+        <item name="android:shadowRadius">0.5</item>
         <item name="android:textColor">@color/white</item>
         <item name="android:textSize">14sp</item>
     </style>