I read messages of your proposition to change this morning before leaving for work. No time to ask anything on the french wiki. And indeed, it would have been useless. By the time I got home, it was done. ... Question : if french or dutch decide they would prefer ? rather than red, is it technically possible ?
Absolutely. Just do it yourself. I'm already about two weeks behind on changes I'd like to make to the software (having a job really gets in the way); thank goodness Brion has taken up some of the maintenance slack for me. But I don't have the time or, for that matter, much desire to deal with international wikis. The code is available to anyone. Access to the server is available to anyone who can demonstrate need and competence. Just do it.