I am using this as the theme.
<style name="ThemeSelector" parent="android:Theme.Light">
    <item name="android:windowTitleBackgroundStyle">@style/WindowTitleBackground</item>
    <item name="android:textAppearance">@style/TitleTextColor</item>
</style>
<style name="WindowTitleBackground">
    <item name="android:background">@drawable/waterblue</item>        
</style>
<style name="TitleTextColor">
    <item name="android:textColor">@color/white</item>
</style>
With this background image is got assigned but text color is not changing.
In manifest I am using like this.
<application
    android:name="com.example"
    android:allowBackup="true"
    android:icon="@drawable/logo"
    android:label="@string/app_name"
    android:theme="@style/ThemeSelector">
				
                        
This is worked for me.