Darkmode User:

Darkmode for the websites.
Toggle black/white mode by the widget button (the ball at the bottom-right corner).
Supports Greasemonkey, Violentmonkey & Tampermonkey.
Employs Darkmode.js by Sandoche Adittane.

Contributing:

Contributions are welcome. You can add new sites at GitHub.

The script is currently finetuned for these sites:

Cinematik
Doom9
GreasyFork
Karagarga
Secret Cinema