According to the research that I have read deer have receptors for blue and yellow. Everything else is shades of gray. This does not mean they see in blue and yellow but means they can see blue and yellow. So all other colors are shades of gray. They claim deer have 40/20 vision which makes deers vision not as people make out but the problem lies with there ability to focus in on a object, hence the headbobbing you often see deer do trying to figure out what something or someone is. Camo is not my priority but I do consider it. It is just one more edge that I can gain but I will take the right wind along with not getting caught moving over camo but camo is certainly on the list. This mainly applies to bowhunting for me though, when I have a gun where I hunt usually if I see the deer it is already too late for them. Bowhunting I'm often times letting deer walk by me without the intention on shooting them but don't want them to bust me either, also ranges are much closer. So camo is just another thing for me to take advantage of in my opinion.