I changed the style of a button using the following style
<style name="MyButtonStyle" parent="android:Widget.Holo.Button">
<item name="android:background">@color/bg_color</item>
<item name="android:textStyle">bold</item>
<item name="android:textSize">22sp</item>
</style>
the style was applied successfully as I wanted, but now when I click the button the blue overlay of the pressed state is no longer shown, how can I recover it?