samples/training/threadsample/res/drawable/imagedownloading.xml - platform/development - Git at Google

 <?xml version="1.0" encoding="utf-8"?>
 <shape android:shape="rectangle"
   xmlns:android="http://schemas.android.com/apk/res/android">
     <!--  dark green opaque -->
     <solid android:color="#ff2a6a22" />
 </shape>
	<?xml version="1.0" encoding="utf-8"?>
	<shape android:shape="rectangle"
	xmlns:android="http://schemas.android.com/apk/res/android">
	<!-- dark green opaque -->
	<solid android:color="#ff2a6a22" />
	</shape>