action_bar_style.xml

<style name="ActionBarStyle" parent="android:style/Widget.Holo.Light.ActionBar">     
    <item name="android:colorBackground">@color/dull_purple</item>
    <item name="android:background">@color/dull_purple</item>
    <item name="android:textColor">@android:color/white</item>
    <item name="android:titleTextStyle">@style/TitleTextStyle</item>  
</style>

default_style.xml

<resources>
    <!--
        Base application theme, dependent on API level. This theme is replaced
        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
    -->
    <style name="AppBaseTheme" parent="android:Theme.Light">
        <!--
            Theme customizations available in newer API levels can go in
            res/values-vXX/styles.xml, while customizations related to
            backward-compatibility can go here.
        -->
    </style>
    <!-- Application theme. -->
    <style name="AppTheme" parent="AppBaseTheme">
        <!-- All customizations that are NOT specific to a particular API-level can go here. -->
    </style>
</resources>

onCreate.java

@Override
protected void onCreate(Bundle savedInstanceState) {
	getWindow().addFlags(WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN);
	getWindow().addFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);		
	super.onCreate(savedInstanceState, true);
	setContentView(R.layout.activity_pies_list);
	// Show the Up button in the action bar.
	setupActionBar();
}