So with the help of our trusty readers in the comments from my last post, I went back and tried a few more color mixes to hopefully come up with something better. Instead of Astronomican Grey I switched to Codex, and stayed with Orkhide Shade for the green base. After a bit of mixing I came up with something pretty decent, closer to the 'sea green' of the fluff but more muted and military than my original tests. In fact, it looked like a WWII color to me... so a bit of online browsing and a quick trip to my local HobbyTown USA resulted in a pot of Model Master Acryl "Panzer Olivgrun 1943". It was almost EXACTLY the color I had mixed, but ready to go. Can't beat that. I've used the Model Master (made by Testors) acrylics in the past, but only here and there in favor of GW and Vallejo. Testors' model paints are best known for their enamels, but the acrylics are pretty good. They go on thin, and are easy to thin further for airbrushing but still get good results. They also have a LOT of colors to pick from.
As I mentioned earlier The Model Master paints work well through an airbrush, so I already have this guy's squad basecoated. Stay tuned for some results, and thanks for reading!