Firefox's website appearance settings include a setting to force a light theme, force a dark theme, or to have sites automatically adapt to the theme of the browser. I feel that's not exactly what I want. I don't want the browser's theme to have anything to do with themes of the sites I'm viewing, nor to force light or dark. I think I'd rather just use the site's default, or if not that, set a theme on the site itself. Is there any way for Firefox to just not meddle in a site's theming at all?

I kinda just don't want any connection between the theme of my operating system, the theme of my browser, or either of those and the theme of websites, and none to force a theme on any of the others. I'm not sure why that seems so desirable nowadays, but I don't want it.