Examine source code of Afternoon

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#fcf9f9",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Afternoon",
  "manifest_version": 2,
  "description": "Afternoon\n\nthe last ray of sunlight &amp; the reddish sky...\n\nthanks to <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/a500315193ec9562ca7fb82b4a113371b3146284f8e883477c0ec88f7e687439/http%3A//www.webshots.com\">http://www.webshots.com</a> for this image."
}