Examine source code of SimpleHomepage

{
  "manifest_version": 2,
  "name": "SimpleHome",
  "version": "1.1",
  "description": "Displays favorites in a grid layout similar to Safari.",
  "icons": {
    "16": "icons/SimpleHomepage16.png",
    "32": "icons/SimpleHomepage32.png",
    "64": "icons/SimpleHomepage64.png",
    "128": "icons/SimpleHomepage128.png"
  },
  "browser_action": {
    "default_icon": "icons/SimpleHomepage64.png"
  },
  "chrome_url_overrides": {
    "newtab": "SimpleStart.html"
  },
  "chrome_settings_overrides": {
    "homepage": "SimpleStart.html"
  },
  "permissions": [
    "bookmarks",
    "storage",
    "contextMenus",
    "tabs"
  ],
  "applications": {
    "gecko": {
      "id": "bcart0v@gmail.com"
    }
  }
}