I had the gunmetal color on a pair of Half Jackets I use to own. Its looks really cool. Its reminded me a lot of the x-metal color. I really like the look of gunmetal with dark iridium lenses like blue or black.

great lower light lens
nice shape and coveraged without execss bulk

I have this on my RX O Wires, and is a nice dark satin grey. Very similar to 'Dark', but without the bluish tinge and slightly lighter in tone.