Thread:Jenburton/@comment-27328262-20151229082400/@comment--20151229083601

To access the Theme Designer you need sysop rights on the Wiki in question. To have sysop rights, you need to be promoted by a local a bureaucrat or by Staff.

To be promoted by local bureaucrat, check the Special:Listadmins page on the Wiki you like. Contact the user listed with bureaucratic rights and ask to be promoted to admin status (accomplished usually by working on the Wiki and have amassed good edits and a good reputation). Though asking to be admin can turn off a lot of local admins, so it may be best to propose your idea to them and ask they do it for you.

If there are no recently active admins in the Special:Listadmins page (inactive being 60 days of inactivity) you may adopt the Wiki if you meet the requirements. Adopting will grant you both bureaucratic and sysop rights.