I got so sick of trying to find a visual style that I like that I went off and started creating my own.
http://img.photoamp.com/i/BJKjvJ2hG.jpg <- This is what it currently looks like, but it's nowhere near finished: got a lot of images to edit and fix. I want to have a thinner taskbar, but I've no idea how to achieve that, so it's staying as the Luna default (Luna is the name of XP's original theme, in case you didn't know).
http://img.photoamp.com/i/DySfgsUH.jpg <- Update