simplauncher/app/src/main/res/values/styles.xml

<resources>

    <style name="AppTheme" parent="@style/Theme.AppCompat.Light.NoActionBar">
        <item name="colorAccent">@color/colorAccent</item>
        <item name="android:colorForeground">@android:color/black</item>
    </style>

    <style name="AppDarkTheme" parent="@style/Theme.AppCompat.NoActionBar">
        <item name="colorAccent">@color/colorAccent</item>
        <item name="colorPrimary">@color/primaryColor</item>
        <item name="colorPrimaryDark">@color/primaryDarkColor</item>
        <item name="android:colorBackground">@color/primaryDarkColor</item>
        <item name="android:colorForeground">@android:color/white</item>
    </style>

    <style name="AppGreyTheme" parent="@style/AppDarkTheme">
        <item name="colorPrimary">@color/colorBlueGrey</item>
        <item name="colorPrimaryDark">@color/colorBlueGreyDark</item>
        <item name="android:colorBackground">@color/colorBlueGrey</item>
    </style>

    <style name="AppTealTheme" parent="AppDarkTheme">
        <item name="colorPrimary">@color/colorTeal</item>
        <item name="colorPrimaryDark">@color/colorTealDark</item>
        <item name="android:colorBackground">@color/colorTeal</item>
        <item name="android:colorForeground">@android:color/white</item>
    </style>

    <style name="AppPinkTheme" parent="AppDarkTheme">
        <item name="colorPrimary">@color/colorPink</item>
        <item name="colorPrimaryDark">@color/colorPinkDark</item>
        <item name="android:colorBackground">@color/colorPink</item>
        <item name="android:colorForeground">@android:color/white</item>
        <item name="colorAccent">@color/colorAccent</item>
        <item name="android:textColorPrimaryInverse">@color/primaryDarkColor</item>
    </style>
</resources>