Examine source code of Mysterious Harbor

{
  "theme": {
    "images": {
      "theme_frame": "MysteriousHarborH.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#030303"
    }
  },
  "version": "2.0",
  "name": "Mysterious Harbor",
  "manifest_version": 2,
  "description": "mist, fog, hawks, ghost, full moon, goth, Gothic, dark, mysterious, mythical, ghostly, Halloween, My desktop wallpaper that matches is at: <a href=\"https://outgoing.prod.mozaws.net/v1/f333829e8fb5c9fb6b92c59ae8ff5e0cb12a888b1f618b6b7c543f6180c730d9/http%3A//nature.desktopnexus.com/wallpaper/616431/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/616431/</a>"
}