There is two things the deer in my neck of the woods pick up on as far as sight, #1 is movement, #2 is shine. My nephew has some western sage looking camo and a guille top the kind made for prone shooting. we were out in the sandhills of nebraska and from close two 2 miles away I could pick him out and I,m a human with only one eye that is good. He stuck out like a neon sign. Use what ever is avalible, some camo paints have shine some don,t, cork is good and so is mud if avalible, and any clothes that don,t shine. Big ol mulies might not be the sharpest but they didn,t get big by being stupid and they can see very well.