In the same boat
I too am color blind and have an extremely tough time finding downed game. Here are the things I have done:
1) Increased gun to .300 Win Mag shooting XP3's
2) Try yellow tinted lenses (will help in some light conditions)
3) Made friends with a guy with a tracking dog and have my local blood tracker group on my cell if he's not around.
Shot a nice 8 pt this year and I walked past lung chunks and blood 4 times before I got on my knees and saw it. Then called in the tracking dog. My buddy let the dog find it even though he could see the blood trail from the point of impact going into a cutover. Deer had only gone 45 yds. Ridiculous when someone asks "you can't see that?".