Very cool! I want a Windows 2000 version of it. I think that was the nicest looking Windows. It is very close to this, but with a slightly different main GUI color. Not a complete gray, but ever so slightly beige. Makes it more pleasant to the eye, IMO.
> I liked rounded corners on Windows XP. It was the only version of Windows that looked professional and nice at the same time.
It's interesting you say that, since I remember back at the time XP was released, so many people complained about how Windows XP had a "Fisher Price" UI that was distinctly non-professional. (Personally, I always liked XP's look.)
Yeah, the huge blue window decoration with the giant red X and to a lesser degree the mismatched scroll bars really gave it a cheap look, IMO. The rest of the GUI design was actually quite nice. Just these extreme primary colors, overly large GUI elements, and mismatched colors did look bad to me.
Now that's a first to me. Like other commenters said, I also think there was nothing nice about Windows XP's theme. It looked clunky and childish. I mean, I know some people who liked it, but never have I heard anyone refer to it as professional looking.