Examine source code of theleon

{
  "theme": {
    "images": {
      "theme_frame": "flower.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "theleon",
  "manifest_version": 2,
  "description": "Disclaimer: This was made using <a href=\"https://outgoing.prod.mozaws.net/v1/8c2f240c8dd48602f7ac5ea7f8cfff208ce84eccb6dba83cde412f3b583407f3/http%3A//www.colourlovers.com/themeleon\" rel=\"nofollow\">http://www.colourlovers.com/themeleon</a>"
}