I don't know if he is still selling them, but Darkstorm created some "smoke" faceplates that come out a nice shade of green. Look here. Anybody know if he has got any more left?

In any event, it has been mentioned that SB has more kits too, and will offer them when they get packaged up.
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Ninti - MK IIa 60GB Smoke, 30GB, 10GB