Examine source code of www.ramforum.com

{
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    "images": {
      "theme_frame": "ramforumfirefox.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#f2efef"
    }
  },
  "version": "2.0",
  "name": "www.ramforum.com",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/bcaf7ef585631627f5692af294f66b016b48c1c3200bbe2c7442fb30db730d76/http%3A//www.ramforum.com\" rel=\"nofollow\">www.ramforum.com</a>\n\nThe best forum for your Dodge Ram needs!!"
}