Examine source code of Floral Rain

{
  "theme": {
    "images": {
      "theme_frame": "SparklingSky-1A.png"
    },
    "colors": {
      "frame": "#323485",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Floral Rain",
  "manifest_version": 2,
  "description": "Abstract yellow flowers against a blue rain background.\n\nThis graphic is also available at <a href=\"https://outgoing.prod.mozaws.net/v1/b625664833c69d47c4284d3cfcff2c82e9b8de08db4a9d3bb54a0a66b5037c41/http%3A//www.artaffex.com\" rel=\"nofollow\">www.artaffex.com</a> for desktops and twitter"
}