1. Не хватает смены режимов "ночной"/"дневной" по расписанию.
2. Инвертирует цвет картинок на веб страницах.

I used to use Dark Background and Light Text, but with the new firefox legacy enforcement I can't anymore. This does the same thing, mostly. All it really lacks are the custom CSS color settings and page profile management, which the developer says he will be adding in the future.

Отличное расширение)

Works pretty well.....