A few things that would make this even better:
A toggle based system so that I can turn it on whenever I feel like it.
A whitelist based system so that I can only turn on black mode for the sites I want, instead of having to disable all the sites that I don't want to have this extension enabled on.
Default color should be something lighter in the first place. SoL but hey.

I like what it does and it seems to work well, but I'm disabling for now because it makes my pages bug out for a few seconds while loading and then changing the colors. Probably just my crap computer, so results may be different for you.

the addon made EVERY website to become dark unless specifically disabled. theres no option for the opposite. this makes it very irritating when you open a new site and its all messed up and i have to manually disable the addon. even though i uses this addon just for ONE site.

I feel this is a good solution for a challenging problem. Unfortunately the colour balance for several key sites are going to require more tweak-time than I have right now.

For example, folks with better eye-sight than I, may not notice that "dark mode" usually needs the font size bumped on point. There was subtle structural stuff missing on gmail and facebook just due to colour choices, etc. 'General composition and layout' rules cast white space in the role of "framing". When that is removed, something extra is needed to maintain the relationships and flow hints from a UX perspective.

The thing that really decided it for me as shadow text is not at all handled well. Lots of stuff was so fuzzed that I couldn't read it. As I say, put aside time to TWEAK your favourite sites.

I love the plugin. At this time, I can't really realise the benefits.

iye naon, abdi te ngarti

I would appreciate a one click on-off approach over the prevailing interface.

Makes pages take too long to load and looks worse than other addons

I'll keep it to three stars for now. The blacks are actually black and not a dark grey like other similar extensions I've used. The only thing here is that I have to get into the extensions options menu and enable / disable it from that menu.

The only way I'd give this five stars is if it was like a switch that could be enabled right from the toolbar. "Dark Mode (WebExtension)" by Bernard pulled this off to a T, but I'm not exactly a fan of the color scheme although I'll stick with it simply because it's one less step I have to make, and believe me, I click that button a lot.

I'll keep an eye on this one though.