jessepollak/card — pull request #119 by Sorgrum (2014-09-22 14:46:52+00:00)
Title: Make identified card have more neutral background.

The outside curved edges of the card have a visible white residue when
the card is used on a dark background. Adding a black background when
the card is identified makes it look more full. Uses opacity of 50% with a fallback of no opacity for ancient browsers.