Can't comment on non-Rx because I need a lot of correction. Re lens color, I have tried several densities of neutral gray, a couple shades of yellow, and amber. Settled on pale yellow for general use because I can wear them in the morning and evening darkness and they still provide enough glare protection for early morning and late afternoon hunting in the desert when the sun is low. With the yellow, I don't have to carry a second pair of clear glasses in my vest or pack, and I can still get to the blind or back to the truck in the dark. Yellow also seems to work pretty well for me for distinguishing plumage colors on the fly. My lenses are always high-impact polycarbonate.
