some GTs and things like Genesis' came with black ones too, you'll just have to look round, it'll be easier to find one with a sunroof hole than without.
Not sure if VW sell new ones or not but I'd imagine they'd cost a fair bit if they do.
It's pretty hard to remove without ripping it, the rear quarter windows definitely have to come out as the lining is glued to the lip under the window seal.
