res/drawable/widget_conversation_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (c) 2010, Google Inc. -->

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_focused="true"
          android:drawable="@drawable/header_row_focused_email_widget_holo" />
    <item android:state_pressed="true"
          android:drawable="@drawable/header_row_press_email_widget_holo" />
    <item android:drawable="@drawable/bg_row_email_widget_holo" />
</selector>