I'm headed to maui with my family in a couple of weeks and can't wait to do some diving and snorkeling. My 72 year old father loves to snorkel, however after a detached retina, multiple eye surgeries, and suffering from thyroid eye disease, my dad doesn't go out in bright sunlight without heavily tinted wrap around sunglasses. Unfortunately last year he didn't snorkel for the first time because he couldn't find a mask that was tinted? Does anyone have any recommendations or suggestions? Im not concerned about altering colors, and remember this is a mask just for snorkeling, but I'd love for him to be able to snorkel again.