Pluvius

Effortlessly customize your Android device with Pluvius. Just choose any wallpaper, and this app will automatically change your interface's color scheme to perfectly complement your new background.

However, you do need root privileges to use Pluvius, otherwise you won't be able to activate it. On top of that, the app isn't compatible with a few popular ROMs, such as OnePlus, OxygenOS, Samsung TouchWizz, or Xiaomi MIUI, nor with versions of Android older than 8.0.

So long as you can complete all its requirements, you can get fantastic results -completely automatically- with the personalization app Pluvius.