Examine source code of Search highlight

{
  "manifest_version": 2,
  "name": "Search highlight",
  "version": "2.1",
  "default_locale": "en",
  "author": "René Lambruschi",
  "description": "__MSG_extDescription__",
  "permissions": [
    "contextMenus",
    "activeTab",
    "webNavigation",
    "menus",
    "storage",
    "tabs",
    "scripting",
    "<all_urls>"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/on-16.png",
      "32": "icons/on-32.png",
      "48": "icons/on-48.png",
      "128": "icons/on-128.png"
    },
    "default_title": "Search highlight"
  },
  "icons": {
    "32": "icons/on-32.png",
    "48": "icons/on-48.png",
    "128": "icons/on-128.png"
  },
  "background": {
    "scripts": [
      "/background/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{264e4e49-003a-4ea7-8bcd-b50129db3769}"
    }
  }
}