■ 🕑 8. 
   It's going to be handled by backend rather than JS, with an option to
   select via CGI variable in URL. So far we don't use any javascript here
   and the only cookie is for the admin password. But a cookie for site
   theme feels appropriate. 
   
   I may also add a cookie for the name field, so whatever name you enter 
   is preserved; posting as anon clears the name cookie -- just like on
   wiki.gikopoi.com 
   
   What 0chan/multichan did ... *worked* but the stylesheet changing 0.5s
   into a page loading was not very kino.