I'm using dark mode and it's basically unusable. The colors are way too bright and the tab text is in white, which ends up being completely unreadable.

Doesn't work on (my) CentOs Linux. Work only on Windows

Nice idea, but colorization is not per domain - the algorithm seems to be incomplete or broken.

For example open some gov.uk websites especially those that still have the same domain but have a slightly complex structure e.g. https://provide-journey-contact-details.homeoffice.gov.uk/next and https://www.gov.uk/guidance/how-to-quarantine-when-you-arrive-in-england#rules-if-youre-fully-vaccinated