Yep...I'm red/green colorblind to the max. Found out when I was 9. I'm 47 now. At first it totally sucked. I used to shoot deer, and if I didn't see em go down, I'd go get help. On those that did go down in sight, rather than run over to where they lay, I would force myself to go to the point of impact, and track the deer. Even though I knew it was laying 75 yds away, I woulf force myself to look for the signs a deer leaves when they are hit. I learned what blood looked like when I found it, I learned how to read turned over leaves and earth. To look for hair on the sides of trees etc.... I've taught myself to be a pretty decent tracker and now I no longer fear not being able to see blood. I can't see it as clearly as folks who ain't color blind, but I can find blood and follow a trail. It just takes time to learn. I've not tried hydrogen peroxide (makes foam when it contacts blood) because if I find something I think is blood, I just wipe my finger through it. I see blood real well on my finger, just not on the multi colored forest floor. Haven't used any of the blood lights and other crap like that cause, well, just because. I'm a bit of a hardhead and I'd just as soon do without those things.