Google's mentioned a few times that there will be different styles of Google Glasses, but we just got a peek at a shade accessory courtesy of Sergey Brin, who was standing on top of the Moscone Center for the second skydiving Google Glass demo of Google I/O. Yes, it was just as crazy as the description sounds (you can hear more about it in our live blog), but it's also the first look we've gotten at that shade, which seems to snap on in order to turn the Google Glass specs into... sunglasses.

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