outline/app/src/main/res/values-notnight/themes.xml

<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:tools="http://schemas.android.com/tools">

    <style name="Theme.Outline" parent="android:Theme.Material.Light.NoActionBar">
        <item name="android:statusBarColor">#00000000</item>
        <item name="android:navigationBarColor">#E6FFFFFF</item>
        <item name="android:windowLightStatusBar" tools:ignore="NewApi">true</item>
        <item name="android:windowLightNavigationBar" tools:ignore="NewApi">true</item>
    </style>

</resources>