I am using Ubuntu 14.04 and Firefox quantum 59.0.1. But YouTube shows dark theme even the dark theme is turned off. I don't know why it is happening. Here is a screenshot.


How can I fix this isuue?

  • Have you tried restarting the browser? If so what else have you tried. – Jeff Mar 30 '18 at 14:14
  • No i haven't tried. But i have reinstalled firefox, however no result. – vishnu m c Mar 30 '18 at 14:17
  • Try to clear cookie or cache by Ctrl + Alt + Delete – mja Mar 30 '18 at 14:24

From your screenshot it seems you're using Enhancer for YouTube™ Firefox add-on which is capable of overriding your theme only for YouTube.

To fix this, open preferences for the add-on, scroll down to Theme section and select "Theme by default".

enter image description here

  • I think the link you provided is broken. – Jeff Mar 30 '18 at 14:23
  • Yeah.. i got it working. Thank you for the fix – vishnu m c Mar 30 '18 at 14:26
  • @Jeff Could you try now and report? Probably something went temporarily wrong with addons.mozilla.org server. I just checked, it's opening the add-on page alright. – pomsky Mar 30 '18 at 16:01
  • @pomsky yes, it is working now. – Jeff Mar 30 '18 at 18:04

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