'Army Painter' has 3 Greens. Greenskin (Quite bright, vivid Green), Necrotic Flesh (Washed out, dull Green), and Army Green (Darker, deeper Green). Necrotic Flesh is probably your best bet, but it depends on how you're Painting therein.
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Picture Samples. (Ignore the Dip Stages and whatever else. The first Picture is always the Spray Basecoat, so that's what you're looking at!)
Greenskin
Necrotic Flesh
Army Green