The colours of the forum can be chosen from a colour wheel in vb4
You could make a parent template and the give it child versions with different colours (I think... I don't use it) if I'm right, it would take very little time or effort to do!
Marco, have a look here at the catergories http://www.realphotographersforum.co...-features.html
That should give you an idea of how you could organise articles etc ...
I've recategorised my content after blabbing on about how good it is here!