Examine source code of Catching Sparks

{
  "theme": {
    "images": {
      "theme_frame": "catchingsparksH.jpg"
    },
    "colors": {
      "frame": "#f5eded",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Catching Sparks",
  "manifest_version": 2,
  "description": "cyclone, breeze, stars, swirl, white, wind, sparkle, gray, grey, snow, shine, winter, glow, simple, light, sparks, \n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/d1cd0530e711bbae68bdd4330117c4b7019f222a57a27fe954c835111d8a20e8/http%3A//abstract.desktopnexus.com/wallpaper/1303977/\" rel=\"nofollow\">http://abstract.desktopnexus.com/wallpaper/1303977/</a>"
}