Added by niklasg@userstyles, Created: Jan 18, 2015, Updated: Mar 13, 2017
  • With the style applied
  • Addon detail
  • developers documentation 1
  • developers documentation 2


Simple dark 'skin' for Mozilla pages.
Mainly focuses on and, but handles other Mozilla pages as well.

If you have any issues with this style, please open a ticket at

More info
Update 2017-03-13:
Use a different filter that is better for images, simplify the code, fix covered fly-out menus.

Update 2016-04-09:
Fix style for the new amo header.

Update 2015-10-15:
Merge pull/1.

Update 2015-08-05:
Uninvert persona previews.

Update 2015-05-23:
Excluded style from iframes on about:addons.

Update 2015-01-23:
Tweaked filters a bit to emulate higher gamma to increase contrast in former light, now dark, areas. Screenshots are not updated.

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Applies to:,,, ^https?://(?!metrics)[^/]*\.mozilla\.com(\/.*)?... More »

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