After the disaster that was my desktop on a previous computer, I keep my desktop now pretty clean with only a few icons on it. So wallpapers are just a nice thing to look at whenever I happen to minimize all of my windows, which happens every now and then.
Maybe I'll work on making the wallpapers more icon-friendly then.
Edit:
This is a little technique I use for when the colour is a little busy. Usually, I just use it to overlay text in a way that makes it readable while keeping what's underneath still visible. Hopefully the same can help for wallpapers.
This doesn't work too well on my Mac(or rather it doesn't look too well) because the top part is cut off a bit. Hopefully it'll look better in Windows.