Examine source code of Phishing Protect

{
  "manifest_version": 2,
  "name": "Phishing Protect",
  "version": "1.4",
  "description": "Firefox ixtension / change address background color if current domain is not in bookmarks preventing phishing",
  "homepage_url": "https://github.com/Keul125/SafeDom",
  "icons": {
    "64": "icons/safedom-64.png"
  },
  "permissions": [
    "theme",
    "bookmarks",
    "history",
    "tabs",
    "storage",
    "downloads"
  ],
  "background": {
    "scripts": [
      "safedom.js",
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options/safedom-options.html",
    "browser_style": true
  },
  "browser_action": {
    "default_icon": "icons/safedom-64.png",
    "default_title": "SafeDom",
    "default_popup": "popup/safedom-param.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2b0a4d55-9df7-4b6f-8812-772469523da2}"
    }
  }
}