Thread:ChrysieeBoo Lovely/@comment-6773618-20130619014447/@comment-6773618-20130720045451

http://community.wikia.com/wiki/Forum:Colored_Comments_for_Admins

Or this

http://community.wikia.com/wiki/Admin_Forum:Changing_admin_username_color%3F

But I think it's this

http://dev.wikia.com/wiki/Admins_%26_Bureaucrats_Highlight