Oh boy I really hope this works. I have no idea how to make css files so I copied the tex of the default one into notepad, changed the background to yellow, the font to Jokerman, and renamed the file with .css. I doubt it'll work, but how cool would it be if that worked on the first try?
It kinda worked. It's yellow, but no Jokerman.
Ok turns out I misspelt Jokerman as Jockerman, and the in-site editor for css wasn't working, so I had to change it in the original notepad file.
Couldn't get Jokerman to work, so I swapped it our for Papyrus in the interum