I really like that you can set your own wallpaper without changing the whole skin. While I don't have the time nor patience to make an entire theme I can crank out wallpapers pretty quickly. Here are a few of my first attempts, I just used some of the backgrounds I have cycling on my windows 7 machine. Took all of about an hour and a half to make, enjoy if you like, or don't, your call. Feel free to alter these in anyway you see fit or even pack them (I didn't want to make anyone download them all without seeing first), the white gap is exactly right!