How dogs see color.

Here is a really good site on what or how dogs see. There are some colors they see better, but more important is motion and contrast of color. I often wondered why hunters wore fluorescent orange and camouflage together, but this article also explains that to game and our dogs the orange blends in with the greens of camouflage or the colors found in the field.
http://www.puplife.com/dogcaretips/howdogsseecolors.html

I have done a lot of bird and bumper throwing for my training buddies and it is interesting to see how dogs mark and at what part of the retrieve the dog no longer relies on sight and begins to scent. That is what makes blinds so hard, because the dog should neither mark nor scent to the bird or bumper. Some scenting is probably okay, when I figure out how much I will be a better handler :o).

The training bumpers I have are a whole mish mash of colors, sizes and material. My girls both love and choose from the pile first an old green canvas bumper that has been sewn and taped, it is the prize of the bumper bag. Their least favorites are the 2 white fire hose bumpers I have. So their choices aren't based on color just favorites.

Go to this site to read the Canine Color Vision Article.
http://www.katiesbumpers.com/documents/k9colorvision.html