Thread:Hisssterical/@comment-33625754-20190311072420/@comment-35616940-20190312102749

No problem, I'm happy to help.

This is where you find the Mediawiki .css page on your wiki. What I would do is copy and paste the code, changing the user group name and the colours. I'm not good with coding either.

As for the wiki being super slow and freezing, I'm not sure. I'd speak to Special:Contact, since it could potentially be a bug.