Examine source code of Littleworld

{
  "theme": {
    "images": {
      "theme_frame": "lw_persona_header.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#e6e6e6"
    }
  },
  "version": "2.0",
  "name": "Littleworld",
  "manifest_version": 2,
  "description": "An picture from me...\n\nDeviantart for the complete picture:\n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/38b40a15b4ae14164464d5b0ac1057595b8826820179494772e939e44a1ffcd9/http%3A//danielpsycho.deviantart.com/art/little-world-127312830\">http://danielpsycho.deviantart.com/art/little-world-127312830</a>\n\nGreez\nDanielN."
}