The company producing the clear cases did make some coloured examples a year or two back, but I don't know if the hardening laquer was applied or not, and whether that would appreciably alter the finish. Apparently it's mainly used on polycarbonate lenses for glasses, to stop them being scratched so easily.
Edit: I also think a new poll would probably be a good idea, but we're not quite there yet in terms of consensus particularly about whether and how the new mutlicolour options should be used. I think I would also favour a dark grey (call it what you like) as a main colour at least. We've seen a real sample in SNES grey before now, I think I saw when digging for renders, but I'm thinking a lot darker than that.