Does not work for private browsing.

Doesn't work well, keeps reloading the page so i can't even access the videos that left and i wanna watch.

Doesn't work with youtube polymer disabled with tampermonkey. Also continually reloads all open youtube tabs.

Просто уходит в вечную перезагрузку страницы. КГ/АМ

Doesn't work

not working for me. only thing dark is the video, not the background. it used to work, not sure why it stopped working.

too bad

Ошибка установки: Дополнение с этого сайта не может быть установлено, так-как оно по видимому повреждено!