I only wanted to put google calendar in dark mode, and it works perfectly, I'm very satisfied!

good but sometimes when i turn off, my firefox browser theme goes from dark to light or vice versa.

Firefox dark mode made a couple sites unusable but Dark Reader seems to have solved that with a nice contrast setting without losing images or darker items on a page.

在黑暗里看屏幕的必需品

Freaking awesome! Best thing ever made! THANKS DARK READER