Good question, I’m not sure. From using a desktop wallpaper on my android before however I can tell you that in practice, whatever happens with your cache, it just crops the image to fit your screen. It can be a problem if you want the full design, but with a one color image, you’d never be able to tell.

But hell yeah I can understand being way too lazy to care, though still then I wouldn’t be saying “there’s no option…” because there is, you just have to supply the image, which is really very easy if you did care to do it.