Examine source code of Big Cursor Extension

{
  "manifest_version": 2,
  "name": "Big Cursor Extension",
  "version": "1.0",
  "description": "Make the cursor larger and more visible.",
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_title": "Big Cursor Extension",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{14bc0052-859b-4292-b49e-eaa148f84ee7}"
    }
  }
}