"Bata again" by Alexandra J. Smith

...Oh yea, I like the transparency of the foreground leaves.

It depends on whom she is hiding from.
I was out in the woods one day with one of those old Polaroid cameras (the kind where you peel the backing off the pic, and it's all gooey 'til it dries). The camera was loaded with B & W film. Moving around quietly a buck and I came face to face about 20 feet apart -- he was brown, standing in some bushes (mostly leafless) against a gray and green background -- I could see him very clearly with my color vision. I took the pic and at the click he walked away. After waiting 60 seconds I peeled the backing. The pic showed the background and the bushes with their bare branches, but no deer. In B & W the deer was completely invisible!
I'd also read that in WW-I when they were first experimenting with camouflage, they discovered that people who were completely colorblind could clearly see whatever it was the other side was trying to hide. The object either looked too light or too dark against the background -- even when the color hues were correct.
I'd seen some photos of natives in South America, some had very stylized body paint, but one person's was a lot more random (dots and lines). I then realized that the paint probably served as camouflage -- the idea being to break up the outline of the body.
So I don't think the exact shapes or colors are terribly important, you don’t really need to draw leaves or whatever. Very few mammals can see color, but primates can, and most birds can. Thus even brightly colored body paint could help in a hunt, but against another tribe one might want to mimic natural colors.

this is real cool, and original. Its not often you see a rain forest backdrop in fantasy art, and she does look kinda like a native American from the amazon rainforest. Way cool.