Examine source code of Daily Motivation Tab

{
  "manifest_version": 2,
  "name": "Daily Motivation Tab",
  "version": "1.0",
  "description": "Display a motivational or inspirational quote every time you open a new tab. Allows users to create their own collection of quotes.",
  "permissions": [
    "storage"
  ],
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "icons": {
    "48": "icons/icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{195a56f6-8693-466b-b8cf-9c011e417001}"
    }
  }
}