Examine source code of Richie: A Lead Tracker

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  "version": "1.3",
  "name": "Richie: A Lead Tracker",
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": "icon.png"
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      ],
      "matches": [
        "*://.mozilla.org/*"
      ],
      "css": [
        "index.css"
      ],
      "js": [
        "index.js"
      ]
    }
  ],
  "permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b5858cd5-01cc-45df-ab47-3fa326b552d2}"
    }
  }
}