I too am red/green color blind. The lights and different things that are supposed to enable you to see blood, don't work for me at all. The peroxide sprays, they do foam, but it is not realistic to use. A man cant carry that much with him on a hunt.
Now, that being said, I do think that if you let your being color blind stop you from hunting that you are letting one of life's many obsticles whip you. I go and hunt on my own. I kill deer by myself and track them. We may not be able to see the blood on the ground, but we can see it once we have it on our hands. I have crawled on my hands and knees a long long way touching everyting that looked wet. If it is blood you will be able to tell.
I make sure to watch where the animal left and mark a tree that they pass. I don't go to the spot I shot them to find blood because sometimes it take a few hops to get it leaking good. I go to the tree where they passed about 20 yards from where I shot and start my search. Touch everything that looks wet. I follow the leaves where they run. Many times you can tell an injured deer track from a scared deer track if you look good. An injured deer will run stiff legged most of the time. Make sure to focus you search on the right trails.
It ain't easy, but you CAN do it. NEVER GIVE UP!
God Bless,
Nathan