As the majority on the list (including myself) seems to favor the "red links" instead of the "?" for broken links, and after (one) positive feedback from the German list as well, I committed the appropriate change to the CVS repository. It should affect only not-logged-in users. The change will go online as soon as someone updates the running software.
It will also affect new users, I assume -- their default preference setting will now use coloured links.
And you implemented the accessibility provision that the OP mentioned, yes?
-- Toby