There is no dupe in my collection for OPI Rainforest. I figured it looked like such a regular green, I must have a dupe. But there isn't. Although it's ridiculously sheer. And there are much better greens out there. Just sayin'.
I'd say closest I have is Rimmel Camouflage. It's just got a slight gold shimmer where Rainforest does not. But on the nail, the gold shimmer really isn't very noticeable. It might be enough to assuage the lemming. Oui? I wish I had a nail wheel that I could use to show you guys.
Promise, when my nails are better, I will do a comparison. If y'all don't see it, feel free to drop a line and remind me.