Are all of the aluminum C Six the same color? I just purchased a pair and was surprised that they were very dark, almost black. Judging by the photos I have seen both here and on ebay, I was under the impression that they were silver (bare aluminum) in color. I still like them but I am trying to decide if I look like I am wearing the large cover up glasses that many older folks wear over their glasses. The dark frame and lens seem to give that impression. Did some come in silver or is this just the result of high intensity light/flash photography?