I think the green and orange look lovely from that picture Mick
Doesnt the PS3 have a lot of different coloured PS3s available in Japan, but frankly, here in the UK the first time another coloured PS3 will be sold is pretty soon actually, a white version via gamestopUK.
So I bet lots of colours will be available in Japan (like shown in the pic above) but perhaps not at launch. Heres hoping the rest of us get the same choice
Black and MAYBE one other color for Western launches. But no more. They always show all kinds of cool colours, some of which might be released later (usually as a part of some game + handheld bundles), some of which the public will never get the chance to get their hands on.
Going by past launches in Europe, US and UK we will probably be stuck with standard black for now. I reckon a variety of colours be available for the Jap launch. Who knows...If they decide to go the route of the 3ds then perhaps we might have a selection to choose from come launch, heres hoping :-(