I saw an article in a magazine several years ago, that took photos of camo patterns in B/W. It was amazing how they stood out against the background. The surface texture of the cloth I think made the artwork usless. At least in B/W.
As a photographer, thinking in black and white is hard. It's a skill that takes practice and talent. We see, and understand the world in color, but for deer it's all contrast and movement.
I've had deer unable to see me, fully exposed in regular clothing, from 5 yards away. She was looking, and knew something was odd, but didn't spook until I finally moved. Almost all camo is designed for human eyes, not for a skittish animal that deals only with contrast and black and white.