Examine source code of Fire Light

{
  "theme": {
    "images": {
      "theme_frame": "DavidsNorsemanH1.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Fire Light",
  "manifest_version": 2,
  "description": "Norseman, Viking, Scotland, Shetland Islands\nThanks to David Gifford for the use of his fantastic photography. Photo from 'Up Helly Aa', Europes largest fire festival held in Shetland.\n\n<a href=\"https://outgoing.prod.mozaws.net/v1/8a602a4866bb9b7dfa76761234e0f410a96c743865bd792d467b9511cdeb2060/http%3A//www.davegifford.co.uk\" rel=\"nofollow\">http://www.davegifford.co.uk</a>"
}