...Still on the subject of matching sunglasses, does anyone else find that brown-colored lenses match poorly with a grey suit while charcoal is the most versatile? I think all the shades posted so far have charcoal lenses, including mine.
I find brown sunglasses more versatile than black just as brown shoes are more versatile than black shoes. I'd be wearing brown shoes and belt with that grey suit during the day. This is, of course, a personal preference. However, I think the primary consideration should be how the sunglasses complement your hair and facial coloring. Brown frames generally look better on me due to my dark brown hair. My coloring is high-contrast so black frames are also acceptable on me but they don't "sing" like the brown ones. Lenses tend to match the frames. Warm tone lenses with warm tone frames and cool tone lenses with cool tone frames. I'd think about what frames look best on you and then match the lenses to the frames.