The first time I saw this technique was while trying to figure out how GitHub styled the keyword:value tokens in their search box. It's a very cool technique, a

The first time I saw this technique was while trying to figure out how GitHub styled the keyword:value tokens in their search box. It's a very cool technique, and you've done a very nice job of integrating it with a markdown parser! Only down side to it is that you cant apply any padding to the styled inline elements.