Evaluating XenForo for clients, I'm running into this problem. I can style the front-end by specifying CSS in EXTRAS.css, but that does not work for the Admin Control Panel. I need to expand the ACP back-end with customized functionality and therefor need to style ACP appearance. EXTRAS.css is included in public.css, which applies to to the public end, not the ACP back-end. How can I style the appearance of the ACP thru CSS? Thanks, Eric.