Dark Mode for forums

[Rathamus]

Hi I was wondering if there is a way to make the forums black/dark background on lighter colored text, and if not, is this something that could be easily implemented?
I was previously using a browser add-on to do this but Firefox recently blasted all add-ons so now the forums look like a sunny blizzard.

[Heavy Arms]

Add-ons should be functioning again (or should be able to be made functional again) if you go to Mozilla's websites for ways how after the nuking that happened. It'd be cool if there's a setting internally for it, but it should be manageable even if they can't do it with the software here.