I agree with M60gunner that the wool shirt is much more effective than the ASAT in that photo. I also agree with some of the statements that UV may be a factor in how well deer see us.
Years ago, UV was a topic covered in a whole bunch of articles. The consensus was that, basically, deer see deeper into the UV spectrum than we do. Many of the dyes used in clothes (including commercial camo)use UV as a "brightener". We see it as a bolder color, and the deer see it as a glow.
My son is an artist, and I like his take on camo shading and color. His view is that the most effective camo would be one that gives the impression of space. If the colors and shades are right, you don't get the impression of a solid object, but rather there seems to be a space with smaller objects suspended in it, such as you often see with foliage.