[ronjouch]

If you use Firefox, have my userContent.css DIY dark mode. Or you can massage it into the syntax expected by { Arc’s custom CSS, uBlock Origin, your CSS injecter of choice }:

  @-moz-document domain(news.ycombinator.com) {
    @media (prefers-color-scheme: dark) {
      body {background-color: #111 !important;}
      #hnmain {background-color: #181818 !important;}
      .c00, a:link, .subtext a:link { color: #eee !important; }
      .comhead { opacity: 0.5 !important; }
      a:visited, .subtext a:visited, .pagetop, .reply a { color: #777 !important; }
      button, select, input, textarea { -moz-appearance: none !important; color: #eee !important; background-color: #444 !important; border: 0.5px solid gray !important; }
      pre, code { color: #9d9 !important; }
    }
  }

Obvious caveats apply: it’s mine, it’s certainly incomplete, yadayada. But hey, been working for me for years! Also, now that you know that the feature exists, you can probably search "Hacker News dark mode userContent.css" and find better / more complete ones :)

Always a pleasure helping tasoeur.