Kustom PCs are now doing automotive quality case painting with matching keyboards. See link - http://forums.kustompcs.co.uk/showthread.php?s=&threadid=15757 I've seen the beast in the flesh and it is awesome. It isn't a production line so you are not restricted to their choice of colours. This will be old hat for our North American members but it is still quite rare in the U.K.
Nice, bit pricey though. I can't believe some complete mentalist in that thread said TVR pearlescent paint looks "crap". I almost signed up just to express my disbelief at him.