[USER=11773]roger12RAMJET[/USER] ’s list is great, I will echo what he says about studying the reference material and trying different paint combinations yourself. definitely join the Archive X Facebook group to see some discussion on this topic.
I ended up mixing the LT Green and Lark LT Grey for the main green, and it took a few tries to get it where I wanted. I think you want to tone the green down a bit by mixing in some Grey or Grime, and then tone it down further with misting and washes.