Yikes, that Enzo is hurting my eyes. When I close them I can see the image burned into my retinas.
I'd have to say I see tons of Porsches in silver and black. Do a search on eBay and you'll see the vast majority are those monochromatic colors.
I've only seen Boxsters the same color as mine on the internet. There are two guys in this board with the dark green exterior. I'd say that's rare... but not as rare as DJ's.