Well, the colours were just to show the different parts of the site. I could have chosen pink and purple as well.

It was just to make separations visible and is not intended to show or even hint at the definite colour scheme.
However, I think the "skeleton" must be defined before we decide which "clothes" to provide it with... we will want to know what buttons we need before getting some 1337 Photoshop gurus to make some that are never used.
@ MarD's post: First of all, thx for the input!

I'm gonna post some thoughts on the filter system tomorrow, but I gotta get up in 5 hours, so no endless text this time...
That idea with site-specified revision numbers is great! We should really do that.