As long as you don't move, I don't care what kind of camo you're wearing, a deer won't pick you out.
So not true. I have been picked out of the surrounding brush by deer even though I was perfectly motionless and well hidden, so I thought.
Deer know the woods like the back of their hooves
and if you stick a human sized black blob in an area that the deer frequent regularly they instantly know that that blob isn't suppose to be there and go on high alert constanly trying to catch you moving.