That’s a feature added in Android 12 that changes the apps themes based on the wallpaper. While other OS’es like Windows 10 and 11 have a similar feature, on Android it’s more complete and app backgrounds etc. are also tinted based on the wallpaper’s colors as well. Why they haven’t implemented a similar feature in their OS?
Sounds unnecessary and complex. Theming based on light/dark is definitely good but how much more beyond that is helpful or noticed?