I really like old school camos. Ie: Mossy Oak bottom land. Drake Old School and the BDU mil-surp stuff.
I typically wear a camo shirt with carhartt pants. I like their 'stone' color. It works well.
For sucks, though, I wear the Max-4 Advantage. I really feel ducks/geese can see much better and it's needed to blend into a marsh when they have the arial advantage. And, they see some colors, too.
