So, I'd like to get a new pair of sunglasses to replace my gold Ray-Ban Aviators. As you can imagine, it is hard to find anything that fits me right and looks proportionate on my face. In other words, my sunglasses have to be big. I saw these at Bergdorf the other day and almost snapped them up: They're Cutler & Gross model 0851. They're huge (I think they're called the 'Goliath', actually). My only hang-up is the coloring. I'm pretty sure I'd like to go with black frames and brown gradient lenses (different from the pic), but I'm also considering the faux tortoise shell version. I hate faux tortoise shell in concept, but I like the way it looks. Assuming I can get over that hang-up, would you recommend the black frames, the tortoise shell frames, or some other color? Thanks!