Yeah I was playing around with the idea of adding some green paint but decided against it because:
1) The disc design is not a direct translation of what he had on the show so there is a bit of ambiguity about which bit should be green.
2) It would require some tricky tape-masking to use spray paints or I would have to buy a good brush to do it.
3) I didn't want to buy *another* paint.
I didn't do a top coat because apparently they advise against putting a top coat on the metallic silver paint.