Examine source code of QP FAB background

{
  "name": "QP FAB background",
  "description": "Now you can Change the current page color",
  "version": "1.2.8",
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_title": "QP FAB background",
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{24c52aa9-9863-468d-8b35-a749ff6368a9}"
    }
  }
}