https://www.bleepingcomputer.com/news/google/google-chrome-tests-feature-that-gives-any-site-a-dark-mode/

In the Chrome 78 Canary build, Google is testing a new feature that will give any site a dark mode whether or not they actually support one.

This new feature titled "Force Dark Mode for Web Contents" will allow users to convert any site into a dark mode version by applying various color filters and image inversion formulas.