I wasn't sure about Evan's new colour scheme -- I think people would be confused by broken links that look like stubs and stubs that look like visited links. So I committed the new style sheets in an "alternate" directory. That also required a minor change to the installer.
Setting the default style for <a> tags caused all headings to turn bright blue, on pages with TOCs. So I commented that line out.
While I was at it, I noticed that ordinary internal links were underlined regardless of the user preferences. Brion took out the class=internal from ordinary links a while ago, putting it back in seemed to fix the problem.
The only other change I made to Evan's stuff was adding the ability to disable the cookie check in LocalSettings.php
-- Tim Starling.