Everyone should checkout Dark Reader extension, it's been doing adaptive dark mode for many years, and it's customisable. It even does light mode too. Using it in Firefox on HN right now!
I'm concerned that these extensions can "read and modify" everything. I can't use that for work.
I just noticed that Dark Reader stopped working for me. Turns out I accidentally installed "Dark Mode", a potentially malicious clone that got blocked :/
AFAIK, its detectable by the web page though
I like that on Chrome, and while it works on Safari, I prefer Noir there.
Dark Reader went political - that's an automatic "NO" from me
Slows down loading of websites a lot though.