Earlier quoted context omitted.
There are many ways for end users to force dark mode without any change on HN. "invert page colors" chrome extension, for example, does a nice job. Not ideal, but good enough. I second the other commenter, don't do anything. Or get someone really good to help you!
There's a very solid Stylus theme for HN that I've been using as long as I can remember. Until just now I had honestly forgotten that this wasn't what HN looked like by default. https://userstyles.org/styles/113994/hacker-news-dark
Edit: my fault. I have too many dark mode addons/stylesheets enabled at the same time.