If the clothing item will manage moisture I don't care what name is on the tag. I'm plenty happy w/one "earth-tone" colored dye for my clothing as well. I don't care if it's made for every-day, hunting, fishing, camping, hiking, hockey, football, soccer, volleyball, or golf. If the clothing item can keep my dry by either keeping moisture out, or moving sweat away I'm likely to find it useful.
A critter is more likely to see your movement WAY before they could make out your outline which is when camo MIGHT help. WELL before worrying about their sight however, you gotta manage the situation to stay the hell outta their sniffer. You could have that light-bending camo from the Predator movies and it's not gonna do you a lick of good if your quarry smells you before they're within sight of you.
I avoid cotton like the plague.