Re: Milspec camo for hunting...
One important thing to remember is you don't want to wash your hunting outfit with any detergent that contains UV brighteners. Don't use fabric softener, use up to 1/2 cup of distilled white vinegar instead. It cuts the detergent smell and residue and will leave no smell behind.
Don't shave the next morning and wear unscented deodorant. I also make a habit of hanging my hunting clothes outside the night before to try and let as much of the outside air and natural smells penetrate the fabric as possible. I don't recommend doing that if you live downtown, but if you've got a tree in your backyard hang 'em up. I also tend to 'dog roll' in the grass or leaves before I head into the hunting grounds for a little natural cologne.
As long as your pattern breaks up your outline, the color doesn't matter so much. Wear a hat and keep it low over your eyes, move quietly, and merge your sounds with those of your environment. Try and keep something between you and where you expect your target to be - like a bush that will help hide your outline.
Camouflage is more about behavior and preparation to me than it is colors and patterns. FWIW, I stick with medium gray t-shirts and lighter blue jeans or khaki work pants as a base. I use dark green long johns to cover my arms on cooler mornings, a dark brown boonie style hat and usually the cheap woodland camo hunting vest from Wally World over top of my shirt to hold ammunition and small game. In the winter with some snow down, I'll drape wide white t-shirt shreds over my coat, hat, and gun to break up the outlines of everything. Deer, squirrels, and rabbits usually don't see me unless I have to move to line up a quick shot. I've also had hunting partners lose me while sitting 3-10 yards away, so it works on humans too
Have fun with it, and see what works for your environment!