Yuito-app-android/app/src/main/res/values-v27/styles.xml

<resources>

    <style name="TuskyTheme" parent="TuskyBaseTheme">
        <item name="android:windowLightNavigationBar">@bool/lightNavigationBar</item>
        <item name="android:navigationBarColor">@color/colorBackground</item>
        <item name="android:navigationBarDividerColor">?attr/dividerColor</item>
    </style>

    <!--Black Application Theme Styles-->
    <style name="TuskyBlackTheme" parent="TuskyBlackThemeBase">
        <item name="android:windowLightNavigationBar">false</item>
        <item name="android:navigationBarColor">@color/black</item>
        <item name="android:navigationBarDividerColor">?attr/dividerColor</item>
    </style>

</resources>