I love using iron sights even though I'm older but I have to have some contrast so I always paint the front sight. Black on black, at least for me is not a good combo for hunting, targets yes but hunting no.
I paint the front sight white with a felt marking pen, let it dry & then paint it with bright orange, red, etc & it's quick & easy to find. A black on black setup against a dark hog or even a deer sometimes is a tough target, at least for me.
Many times I've gone to carrying 2 guns, one scoped, sticking out of my backpack & one belt gun with irons. But I admit a Red Dot would be better, I just haven't went back to them yet.