Examine source code of Counting in Trees

{
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    "images": {
      "theme_frame": "counting-in-Trees.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#aebf15"
    }
  },
  "version": "2.0",
  "name": "Counting in Trees",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/2f993da8f8b8e337803eed743b1e34f9cd61fd28d17bf32e9a83d1956650c38f/http%3A//www.keithvanderwees.ca\" rel=\"nofollow\">www.keithvanderwees.ca</a>\nArt and Music by Keith Vander Wees"
}