I have one camo blended rifle and two that are a shaded green laminate. I really am not sure it makes that big a difference. All the rest are wood or black. As for the colors a deer can see, I was told they can spot blue and yellow. That means I can't wear my pajamas or my superman outfit. But the rest of the stuff is pretty much wide open.
That was pretty cool, how well that rifle blended into the bush there. I really had to look for it, and I spotted the scope of all things. Interesting.