You should be able to change the wallpaper regardless; whatever the name is, both name and location of that file are coded into the HTML. I don't have Prestige, so I can't look it up for you, but if you can't find it surely someone here will be able to help.
(I'm with you, that wall is DULL.)
Got it
But overall I like this layout much better. I am colorblind so if any of the colors don't match, someone let me know!
Edit: Ugh, the more I look at those docked icon labels the more awful it looks. Must... find a remedy...