Something about green
Do not use some bright green. Try to find a military green.
Carefully choose secondary color. I have dark grey, I saw some blue/green or dark blue, but not too vibrant, again dark or muted tone.
Sept color not matter. All colors are good with dark green.
As a base color choose one which have normal and airbrush version to avoid unnecessary mixing of colors and easy using of airbrush.
I hope it helps.