styles.xml

<?xml version="1.0" encoding="UTF-8"?>
<resources>
	<style name="MyTheme" parent="MyTheme.Base">
	</style>
	
	<style name="MyTheme.Base" parent="Theme.AppCompat.Light.DarkActionBar">
		<item name="windowNoTitle">true</item>
		<item name="colorPrimary">#2196F3</item>
		<item name="colorPrimaryDark">#1976D2</item>
		<item name="colorAccent">#FF4081</item>   
		
        <item name="android:elevation">4dp</item>
        <item name="android:windowContentOverlay">@drawable/actionbar_shadow</item>
	</style>
</resources>