It's nice and colorful, but useless when you use the on-page search (CTRL+F) because the backgroud doesn't fill the bottom of the screen, and the search bar remains with white background on white text, meaning you can't see the buttons or text on the search bar!
UPDATE: Other themes with dark background don't have this problem, by extending a black background to the bottom. This is indeed a problem with this theme. See for example "space-ship-by-m-donna"