Examine source code of Summer Painting

{
  "theme": {
    "images": {
      "theme_frame": "SummerPaintingH2.jpg"
    },
    "colors": {
      "frame": "#e3dfdf",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Summer Painting",
  "manifest_version": 2,
  "description": "art, artist, bird, cabbage roses, fleurs, flower, flowers, hummingbird, old fashion, paint, painting, roses, summer, sunny, sunshine, vintage, warm\t\n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/88bd620640afbf4c6a6d79252a12ff3351d72f95773295cb89b75c00cc936ad7/http%3A//nature.desktopnexus.com/wallpaper/1154859/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/1154859/</a>"
}