Chad, I believe it was Tamiya XF81 lightened with just a little XF55. Then I applied several filters with Lifecolor Interior Green (just super diluted with their own thinner) To move away from the khaki/brown like color of the XF81 and give it a more green hue.
Very nice job that. I would love to see it on a dio plint photographed against a real background as I think it would be hard to tell that it is a model.