In 50 years of diving I’m pretty sure I’ve always used black masks, I found a deal on a clear skirted D mask and dove it last Saturday, 101 minute dive with the most horrible mask experience I think I’ve ever had, we aren’t talking bright clear water, it was darkish with 10 to 15 foot viz for most of the dive. The reflections coming from the sides gave me the worst tunnel vision I’ve ever had! I had a spare black skirt for it and changed it ASAP when I got home, the question; why do they even make clear skirted masks