Hacker News Reader

Idea: 1000 karma should get custom CSS as a setting.

and a dark mode button ;)

I'd settle for that too!

Why don't you use Dark Reader extension instead?

But I sometimes use Hacker News from remote machines, and it would be a pain to configure all of them with custom extensions!

Yeah this is the reason. I want a solution that works from any browser/device without the need to use extensions.

You and parent might enjoy checking my profile for customised HN CSS.

(I apply those using the Stylus CSS manager browser extension.)