Feature request: Switch different filling modes between different modes

Describe the enhancement or feature you'd like Switching between bright and dark mode should also switch the fill mode.

Accordingly it should move down to the wallpaper section

Describe alternatives you've considered Converting all of my wallpapers to 16:10.

Additional context Neither of my wallpapers are 16:10, which means I always either have ugly borders where I don't want them, or a blurry mess.

What I want: This is a 1:1 image, so I want Fill mode: center, "Anpassen"

And this is a 16:9 screenshot, so I want the sides cut off with Fill mode: fill, "Füllen"