I far prefer dark mode for "chrome" and OS theming, etc. but not for documents. So the idea that just because I have dark mode selected means I want every site

I far prefer dark mode for "chrome" and OS theming, etc. but not for documents. So the idea that just because I have dark mode selected means I want every site to look like a porn site and my emails to all have back backgrounds is very wrong. I want normal documents, just as they were, but with a dark theme around them.