ESB i use Humbrol 78 for the main green. (thats what you see in my avatar) Although now since Ponte has pointed out some interesting things color wise, i have been playing with adding a touch of blue to it. Havent come up with an amount im dead set on yet though, and only helmets shown on my FB page recently have the blue in the mix.
I havent done many ROTJ but i use Jayvee's color list for those.
In general, Ive also started using Testors Model Master paints and am pretty happy with them as well. They just need to be thinned a little, like the humbrols. In the beginning of this thread i really didnt care for the Tesors paints, but have noticed they are slowly making colors very close to the floquils. Still not the same consistency as the floquils which is one of the reasons i liked em so much, but the color palette is better and with a little thinner they airbrush well.