Dark Backgrounds Switcher 0.3.2.1-signed No Restart
Easily switch the color of foreground (text) to yellow/white and background to black. The plugin offers three modes: yellow on black, white on black and back to page's defaults.
Inspired by 'White on Black' plugin.
This add-on has been preliminarily reviewed by Mozilla. Learn more
This add-on is not compatible with your version of Firefox because of the following: