Examine source code of Delicate Purple bubbles

{
  "theme": {
    "images": {
      "theme_frame": "purplebubbles.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Delicate Purple bubbles",
  "manifest_version": 2,
  "description": "based on  Delicate Bubbles in Purple, available here:\n<a href=\"https://outgoing.prod.mozaws.net/v1/f0a9111b4f07da5fed97b7bb160db922e1e69c9c0267835a989c74f375a332e0/http%3A//www.redbubble.com/people/elviratsquirrel/art/4525625-1-delicate-bubbles-in-purple\" rel=\"nofollow\">http://www.redbubble.com/people/elviratsquirrel/art/4525625-1-delicate-bubbles-in-purple</a>"
}