So after years of the wiki port being a bit borked with the themes
I managed to restore its look before the Fandom layout ports, and fix the background art. I didn't know how to do this til a week ago.
I also attempted to fix dark mode's text by lowering the gamma of the yellow colors.
I'm still working on seeing if there's a fix to the recent activity and polls panels at main page, as those haven't been working in ages, much to my frustration.