react-native-screens/android/src/main/res/base/values/themes.xml

Native navigation primitives for your React Native app.

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <!-- Base application theme. -->
    <style name="custom" parent="Theme.Material3.DayNight.NoActionBar">
        <!-- Customize your theme here. -->
    </style>
</resources>