Admin Forum:How do i get colored names for all admins?

I wonder to all admins of my wiki that i will set automatically get a for example red nick. But i don't really know how to do it. Can someone help me?
 * Edit your wiki's MediaWiki:Common.css page:

color: colorname; } then add the following to the top of MediaWiki:Wikia.css: @import "/index.php?title=MediaWiki:Common.css&action=raw&ctype=text/css"; TK-999 (talk) 13:13, December 29, 2012 (UTC)
 * 1) mw-content-text a[href="/wiki/FirstAdminsNameGoesHere"],
 * 2) mw-content-text a[href="/wiki/SecondAdminsNameGoesHere"],
 * 3) mw-content-text a[href="/wiki/ThirdAdminsNameGoesHere"] {

Not works i did like that and... nothing... When you can help please reply
 * Works for me. Try purging your browser cache (instructions on top of this page).TK-999 (talk) 14:53, December 29, 2012 (UTC)