Twenty Thirteen: add missing "yellow" color tag.

git-svn-id: https://core.svn.wordpress.org/trunk@23957 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Update MediaElement.js to 2.11.0.

Props wonderboymusic
see #24015


git-svn-id: https://core.svn.wordpress.org/trunk@23958 1a063a9b-81f0-0310-95a4-ce76da25c4cd