I picked these up last summer, and they've been languishing half-painted for a long time. I finally got around to finishing them up! The olive drab color is the Testor's model master OD - I think it's called "faded olive drab". There's a couple other versions of olive drab on a couple - I was trying out different colors I had on hand to see how they worked. The khaki color is my good old Humbrol. Afterwards they were all given a nice black wash - I think they're turned out pretty decent!