I, as many others, read this forum al night, sometimes in the dark. A dark theme would greatly increase comfort, especially when reading from a OLED display.
Of course from desktop you can always use Dark Reader, which is great, but from tablet and smartphone you have no options!
If you use a chrome-based browser, you can enable this: chrome://flags/#enable-force-dark
I agree an official way would be better, but at least we don’t have to wait for it.
Wow that is cool! Thanks 
It’s a fun feature but as long as I can’t enable/disable it for specific websites it’s not really an option. Sadly there are a few websites where a browser enforced dark mode does not work. Sure this is a nice workaround but it does not fix the need for a real dark mode.
Firefox with Dark Mode :: MyBrowserAddon on OLED TV 