Examine source code of Rainbow Line Swirls

{
  "theme": {
    "images": {
      "theme_frame": "top.jpg"
    },
    "colors": {
      "frame": "#8af7ff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Rainbow Line Swirls",
  "manifest_version": 2,
  "description": "This persona uses the design from my website <a href=\"https://outgoing.prod.mozaws.net/v1/a02489310598d3744914052b79bbfab64a27e43162015401f670a93931de70f6/http%3A//www.devseo.co.uk\" rel=\"nofollow\">http://www.devseo.co.uk</a>. Quite liked the colours in Firefox!"
}