Examine source code of Leaves on trees

{
  "theme": {
    "images": {
      "theme_frame": "fogliesuglialberiheader.jpg"
    },
    "colors": {
      "frame": "#d6d2d2",
      "tab_background_text": "#d6d2d2"
    }
  },
  "version": "2.0",
  "name": "Leaves on trees",
  "manifest_version": 2,
  "description": "Photo: <a href=\"https://outgoing.prod.mozaws.net/v1/f0d865fecc56bae7871729a965781a2ca30bf5b1c4da5e7c3630c3eb2a5dd8cc/http%3A//www.massimodallaglio.it\" rel=\"nofollow\">http://www.massimodallaglio.it</a>"
}