ring-android/app/src/main/res/values-v21/styles.xml

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

    <style name="AppTheme.ActionBar.Transparent" parent="@style/Theme.MaterialComponents">
        <item name="android:windowTranslucentStatus">true</item>
        <item name="android:windowTranslucentNavigation">true</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:windowActionBarOverlay">true</item>
        <item name="windowActionBarOverlay">true</item>
        <item name="android:actionBarStyle">@style/ActionBar.Transparent</item>
        <item name="actionBarStyle">@style/ActionBar.Transparent</item>
    </style>

    <style name="AppThemeBase.Dark" parent="@style/Theme.MaterialComponents.NoActionBar">
        <item name="colorAccent">@color/color_primary_dark</item>
        <item name="colorPrimary">@color/color_primary_light</item>
        <item name="colorPrimaryDark">@color/color_primary_dark</item>
        <item name="android:windowContentTransitions">true</item>
    </style>

    <style name="AppThemeBase" parent="@style/Theme.MaterialComponents.Light.NoActionBar">
        <item name="colorAccent">@color/color_primary_dark</item>
        <item name="colorPrimary">@color/color_primary_light</item>
        <item name="colorPrimaryDark">@color/color_primary_dark</item>
        <item name="android:windowContentTransitions">true</item>
    </style>


</resources>