xul-ext-colorfultabs 31.1.0+dfsg-1 (amd64 binary) in ubuntu zesty

 ColorfulTabs is a Firefox extension that colors every tab in a different color
 and makes them easy to distinguish. It also beautifying the overall appearance
 of Firefox. ColorfulTabs does one and/or more of the following:
 .
  * Colors each tab using pre selected colors in a definite order starting from
    the left.
  * Colors each tab using a unique and randomly generated color.
  * Colors each tab using a unique color depending on the site domain using a
    formula.
  * Allows user to chose colors.
  * Allows one to fade the background tabs for easy identification of the
    selected tab.
  * Allows quick identification of the tabs.
  * Allows quick identification of tab boundaries.
  * Increases usability and visibility for people with visual challenges.