When it comes to tracking wounded game, color blindness does suck. I should know. I have it. I can see some colors. I have whats known as red/green color blindness, and even though I can see shades of red and green, blood on a leaf, to me, looks like brown spots (thank god there are no other brown spots on leaves


...yeah right...every leaf on the ground has them).I have to go slow and touch every leaf that is suspect. Looking for "kicked up" dirt and such is far easier for me. Tracking through grassy areas is easier too, as the blood, to me, shows up better. I saw some post on here last year or so where a guy had the yellow eyeglasses that he used, because he suffered from color blindness as well. May have to look into those.
Still, tracking wounded game is by far not the only "tracking skill" as someone mentioned the guys in Africa, use their unbelievable skills to study their surroundings at alll times. Those same type of skills, I feel, are put to use with regularity in the wide open spaces of the West and the big woods of the North. Not too many eastern deer hunters, imo, are into that as much. There are some that utilize it, of course.