Indicate selected menu item state in drawer (1/2)

Bug 28754805

Change-Id: Ie3aa9bab80266515b49ab33d75be4b188b7eb954
diff --git a/res/values/colors.xml b/res/values/colors.xml
index 6a91140..8fa0e0d 100644
--- a/res/values/colors.xml
+++ b/res/values/colors.xml
@@ -21,6 +21,8 @@
 
     <color name="action_bar_background">#0288d1</color>
 
+    <color name="nav_item_selected_background">#0f000000</color>
+
     <color name="background_social_updates">#ffeeeeee</color>
 
     <color name="action_bar_button_text_color">#FFFFFF</color>