I can't believe I'm admitting to this, but this is what I tried last deer season (and my wife is still laughing at me). I had a 1" x 1" square x 4' long stick lying around so I glued 4 brass sights to each side at one end. One sight blade was just left with a highly polished natural brass finish , 1 painted with a Testors model paint that resembled fluorescent pink, another Testors bright orange, and one with White-out. I took the stick out to my tree stand one afternoon, and as the evening progressed I "shouldered" the stick many times in different light conditions. Even on some deer. I concluded that each sight looked better than the others during certain light conditions throughout the afternoon/evening. There was no clear winner for me. That being said, I'd probably carry White-out if I had to choose one. Easy to apply and scratch off. I wish there were an easy way to lighten the inside of the rear sight, but I'm done testing.