Firefox dev edition defaults to dark mode still as far as I know, though I've personally been using Owl for this for years.
No browser support for dark mode= no dark mode for me.
Firefox Developer Edition is a first party version of the software from Mozilla. It runs slightly ahead of the standard Firefox version I think.
FWIW, Waterfox also uses dark browser chrome by default, although if you're worried about security risks in installing extensions, a third-party fork of Firefox may not sit well with you either.
Regardless, I've used both pieces of software and had very positive experiences.
If you insist, go download Dark Reader from GitHub, look at the code (it's not particularly complex) and install it into Firefox locally.
No, I'd rather use higher quality free software: as it's chromium based it's open source.
Nothing prevents debian from compiling a de-microsofted edgium, like they do with a de-googled chromium.
As for sideloading darkreader, that's a decent idea!
But I'm not sure I want a worse user experience (firefox firing its devs may not have been the brightest idea!) and be forced to sideload extensions for things that are already included in another free software browser.
I use FF daily and it uses darkmode in sites that respect my system settings, because I have my system set to darkmode.
I use a Mac. Darkmode is a native feature.
I know, but I don't want to rely on their goodwill.
I want the browser to provide a dark mode that work in all cases, therefore:
- if webpages advertise a support of dark mode, oblige them
- if they don't, invert colors and use any other tricks as required
On Linux, Edge is the safest and the simplest way to always have a dark mode everywhere.