Basic support for IE8, overriding colors defined in css/ie.css. Please note that IE8 is not and will not be officially supported except for critical bugs; and IE7 is intentionally unsupported.

git-svn-id: https://plugins.svn.wordpress.org/fourteen-colors/trunk@872115 b8457f37-d9ea-0310-8a92-e5e31aec5664