Catfood Earth for Android 4.20 adds support for Material You, the custom color scheme introduced in Android 12. By default every wallpaper update will also subtly change your system color palette. You can override this from settings -> Wallpaper & style and switch back to basic colors if you don't like the Catfood Earth colors. This update was surprisingly painful. You can install Catfood Earth from Google Play, or for existing users it will automatically update in the next day or so.