I've got a bunch of pics on this thread you can check out (just go back a page or so). Also, I just re-skinned the Terran Starbase to make it look more Colonial-- Check it out:
Starbase
It's not in the mod yet, but should be in there in the next day or so. Or, if you've already downloaded the mod, you can just put this in the Images sub directory of the Campaign 4 directory:
New starbase skin