text: <!-- Copyright (c) Microsoft. All rights reserved. -->
  
  <selector xmlns:android="http://schemas.android.com/apk/res/android">
      <item android:drawable="@color/button_pressed_background"
          android:state_enabled="true"
          android:state_pressed="true" />
      <item android:drawable="@color/button_enabled_background"
          android:state_enabled="true" />
      <item android:drawable="@color/button_disabled_background"
          android:state_enabled="false" />
  </selector>