I think we'll have to wait to see what level of customization is allowable with the software or if its limited to certain "skins"...I'm not a huge fan of the tan and brown, but the initial default version was a lot of dark and light greyish blue that wasn't very Superman-like either...I figure it'll be worked out soon...
I chose a different version of the forum through the profiles menu. There are one or two different versions there (skins?) that you could choose from. The forum I have is blue and white.
But anyway.... Surely the point of the forum is scintillating discussion. Does it matter so much what the forum looks like? It's the words that count.