Let me put my 2-cents in with another question or 2.

When you look up a hardwood bottom or along a field edge, does all of it look the same? Does the leaf litter on the ground look like the bush you' re hiding behind? If so, then wear matching camo. If not, then wear pants that match the ground and a shirt or jacket that matches what' s above it.

Butterbean is right, its mostly the movement that they see, but the wind bolws, birds flit from branch to branch, squirrels hop behind logs... There is always movement in the woods. The camo just helps you to mask some of your own. The better the camo matches the surroundings, the more you can get away with.