Examine source code of Zen Home Tab

{
  "manifest_version": 2,
  "name": "Zen Home",
  "version": "2.0",
  "description": "Zen Home Page, credits - Anindu Uthsara.",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "chrome_url_overrides": {
    "newtab": "Home.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8e357ab5-0b08-449f-81d4-ec9d4c188e2f}"
    }
  }
}