Wow, Super liking the color scheme. The Green And white work great, and deff something I haven't seen around Also with colors like those, I would touch up with some blood stains (in weapons, faces, etc) since they will really stand out and look coolish.
And what to you think about changing the turquoise to a metal color or making their skin darker? to add more contrast, and make the army look less like their trying camouflage, unless thats what your aiming for of course.
Nonetheless, Awesome paint job man!