Fix user switching dialog colors for television.

<?xml version="1.0" encoding="utf-8"?>

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<TextView xmlns:android="http://schemas.android.com/apk/res/android"

        android:id="@+id/message"

        style="?attr/textAppearanceListItem"

        android:layout_width="match_parent"

        android:background="@color/background_leanback_dark"

        android:textColor="@color/primary_text_leanback_dark"

        android:layout_height="match_parent"

        android:gravity="center"

        android:paddingStart="?attr/dialogPreferredPadding"

        android:paddingEnd="?attr/dialogPreferredPadding"

        android:paddingTop="24dp"

        android:paddingBottom="24dp" />