Everything I've read and heard leads me to believe that they can see blue , yellow , and green well . Because their eyes are set up more toward nighttime vision than day they can't percieve red very well , brown and orange only slightly better . I had a buck look right at my blaze covered head last year without so much as a blink , so i shot him . I think they see red , orange , and brown as shades of grey , which would make them blend into the background somewhat . The position of their eyes on their skull gives them a very wide field of vision , but the trade off is lousy depth perception . Movement will get you busted faster than anything , if you stay still and you've reasonably broken up your outline they generally won't see you .