Material Design: Warum kann ich die colorPrimaryDark nicht anpassen?

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <!-- the theme applied to the application or activity -->
    <style name="CustomActionBarTheme"
           parent="@style/Theme.AppCompat.Light.DarkActionBar">
        <item name="android:actionBarStyle">@style/MyActionBar</item>

        <!-- Support library compatibility -->
        <item name="actionBarStyle">@style/MyActionBar</item>
    </style>

    <!-- ActionBar styles -->
    <style name="MyActionBar"
           parent="@style/Widget.AppCompat.Light.ActionBar.Solid.Inverse">
        <item name="android:background">@drawable/actionbar_background</item>

        <!-- Support library compatibility -->
        <item name="background">@color/actionbar_bg</item>
    </style>
</resources>

<resources>
    <style name="AppBaseTheme" parent="android:Theme.Material">
    	<item name="android:windowNoTitle">true</item>
		<item name="android:windowFullscreen">true</item>
    </style>
	
    <style name="AppTheme" parent="android:Theme.Material">
        <item name="android:colorPrimary">@color/primary</item>
    	<item name="android:colorPrimaryDark">@color/primary_dark</item>
    </style>
</resources>