This beautiful purple color theme was from the anime series Nisemonogatari, one of the current season anime, the girls are lovely, by the way, is this anime good?
Although purple is not my favourite color, but I quite like this theme, I wonder is because the lovely girls ^^. The only thing I found weird is on the start button. Btw, the theme created by Natsukyo.
In XP, the skin color is using black.
Basically, the XP folder background is same as the Win 7.