The indians killed MANY MANY deer back in the day.. Did they have all the Gimmicks we have?
That may be true, but deer are a bit more educated these days IMO. I remember when it was pretty much unheard of for deer to look up in trees and that was only 25 years ago. Deer will adapt.
As far as camo, if you are stalking, I'd make sure that my camo matched my surroundings. But the actual ability to stalk will still be more important. Good luck with that, and you may want to ask your question in some traditional forums as well. I'd also add to get yourself a good pair of mocasins.