Windows 8 could look better

When I’ve seen screenshots of the forthcoming Windows 8, the thing that strikes me first is how ugly the colours look:

Why would they show off something that makes it appear as if the whole of their staff have had their sense of colour removed?  I spent a short while coming up with a few themes just to show the endless possibilities that could be at their fingertips.  Some of the following may not be to everyone’s taste.