samples/SupportLeanbackDemos/res/values/themes.xml

<resources>
    <style name="Theme.Example.Leanback" parent="Theme.Leanback">
<!-- uncomment to override default transition settings:
        <item name="android:windowEnterTransition">@android:transition/fade</item>
        <item name="android:windowExitTransition">@android:transition/fade</item>
        <item name="android:windowSharedElementExitTransition">@android:transition/move</item>
        <item name="android:windowSharedElementEnterTransition">@android:transition/move</item>
        <item name="android:windowAllowExitTransitionOverlap">true</item>
        <item name="android:windowAllowEnterTransitionOverlap">false</item>
        <item name="android:windowContentTransitions">true</item>
 -->
    </style>
    <style name="Theme.Example.Leanback.Browse" parent="Theme.Leanback.Browse">
    </style>
    <style name="Theme.Example.Leanback.Details" parent="Theme.Leanback.Details">
    </style>
</resources>