Fix subtitle action focus

app/src/leanback/res/drawable/ic_subtitle_down.xml

@@ -1,7 +1,7 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="24dp"
     android:height="24dp"
-    android:tint="@color/grey_600"
+    android:tint="@color/white"
     android:viewportWidth="960"
     android:viewportHeight="960">
     <path

app/src/leanback/res/drawable/ic_subtitle_large.xml

@@ -1,7 +1,7 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="24dp"
     android:height="24dp"
-    android:tint="@color/grey_600"
+    android:tint="@color/white"
     android:viewportWidth="960"
     android:viewportHeight="960">
     <path

app/src/leanback/res/drawable/ic_subtitle_reset.xml

@@ -1,7 +1,7 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="24dp"
     android:height="24dp"
-    android:tint="@color/grey_600"
+    android:tint="@color/white"
     android:viewportWidth="960"
     android:viewportHeight="960">
     <path

app/src/leanback/res/drawable/ic_subtitle_small.xml

@@ -1,7 +1,7 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="24dp"
     android:height="24dp"
-    android:tint="@color/grey_600"
+    android:tint="@color/white"
     android:viewportWidth="960"
     android:viewportHeight="960">
     <path

app/src/leanback/res/drawable/ic_subtitle_up.xml

@@ -1,7 +1,7 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="24dp"
     android:height="24dp"
-    android:tint="@color/grey_600"
+    android:tint="@color/white"
     android:viewportWidth="960"
     android:viewportHeight="960">
     <path

app/src/leanback/res/drawable/selector_subtitle.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/shape_subtitle_focused" android:state_focused="true" />
+</selector>

app/src/leanback/res/drawable/shape_subtitle.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<shape xmlns:android="http://schemas.android.com/apk/res/android"
-    android:shape="rectangle">
-
-    <solid android:color="@color/grey_800" />
-
-    <corners android:radius="4dp" />
-
-</shape>

app/src/leanback/res/drawable/shape_subtitle_focused.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+
+    <stroke
+        android:width="1.5dp"
+        android:color="@color/white" />
+
+</shape>

app/src/leanback/res/layout/dialog_subtitle.xml

@@ -9,7 +9,7 @@
         android:id="@+id/large"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:background="?attr/selectableItemBackgroundBorderless"
+        android:background="@drawable/selector_subtitle"
         android:focusable="true"
         android:padding="8dp"
         android:src="@drawable/ic_subtitle_large" />
@@ -18,7 +18,7 @@
         android:id="@+id/small"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:background="?attr/selectableItemBackgroundBorderless"
+        android:background="@drawable/selector_subtitle"
         android:focusable="true"
         android:padding="8dp"
         android:src="@drawable/ic_subtitle_small" />
@@ -27,7 +27,7 @@
         android:id="@+id/up"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:background="?attr/selectableItemBackgroundBorderless"
+        android:background="@drawable/selector_subtitle"
         android:focusable="true"
         android:padding="8dp"
         android:src="@drawable/ic_subtitle_up" />
@@ -36,7 +36,7 @@
         android:id="@+id/down"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:background="?attr/selectableItemBackgroundBorderless"
+        android:background="@drawable/selector_subtitle"
         android:focusable="true"
         android:padding="8dp"
         android:src="@drawable/ic_subtitle_down" />
@@ -45,7 +45,7 @@
         android:id="@+id/reset"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:background="?attr/selectableItemBackgroundBorderless"
+        android:background="@drawable/selector_subtitle"
         android:focusable="true"
         android:padding="8dp"
         android:src="@drawable/ic_subtitle_reset" />