Thread:IDontCareAboutHistory/@comment-39438776-20190623220011/@comment-33872406-20190625235020

Actually, scratch that. I think I know what you're looking for. All of it's stored on a page called MediaWiki:Users.css

Here's an example of what the code looks like.

a[href="/wiki/User:Wckd"], a[href="/wiki/Message_Wall:Wckd"], a[href="/wiki/User_blog:Wckd"], a[href="/wiki/Special:Contributions/Wckd"], a[href="/wiki/Special:Editcount/Wckd"], a[href="https://plantsvszombies.fandom.com/wiki/User:Wckd"], a[href="https://plantsvszombies.fandom.com/wiki/Message_Wall:Wckd"], a[href="/wiki/User:Vectorgreg"], a[href="/wiki/Message_Wall:Vectorgreg"], a[href="/wiki/User_blog:Vectorgreg"], a[href="/wiki/Special:Contributions/Vectorgreg"], a[href="/wiki/Special:Editcount/Vectorgreg"], a[href="https://plantsvszombies.fandom.com/wiki/User:Vectorgreg"], a[href="https://plantsvszombies.fandom.com/wiki/Message_Wall:Vectorgreg"] {color:blue !important}

Pretty self-explanatory.

You can also add stuff like .comments li[data-user="ThisUserLikesOreo"] .edited-by:after { content: "- Bureaucrat"; color: limegreen; padding: 0 4px;}

This is so that there's a little "Bureaucrat" thing on blog post comments or so.