android button style

A button background effect that works pretty well:

<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://schemas.android.com/apk/res/android">    
    <item
android:color="#f8f8f8"
android:state_pressed="true">                
        <shape>
            <stroke android:width="1dip" android:color="#c1dbc0" />
            <corners android:radius="4dp" />
        </shape>
    </item>
    <item android:state_focused="true">
        <shape>
            <stroke android:width="1dip" android:color="#c1dbc0" />
            <corners android:radius="4dp" />
        </shape>
    </item>
    <item>
        <shape>
            <gradient android:startColor="#e3f2e2" android:endColor="#e3f2e2"></gradient>
            <stroke android:width="1dip" android:color="#c1dbc0" />
            <corners android:radius="4dip" />
        </shape>
    </item>
</selector>