I recon most ruminants (domestic) actually see blue very well.

My experience with game is that without movement, you can wear whatever you want..?

A few years ago they discussed an almost similar matter in on of the farming magazines:
They found that cattle were calmer as the farmhands had blue clothing while working among the animals in the barn., rather than other colours.

Maybe thats what happens? The wild came get calm by the blue colour before, BANG, they leave for greener pastures?