Examine source code of Black & White Flames

{
  "theme": {
    "images": {
      "theme_frame": "BlackWhiteHeader.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Black & White Flames",
  "manifest_version": 2,
  "description": "Made using Peter Blaskovic's Flame Painter\n<a href=\"https://outgoing.prod.mozaws.net/v1/528c516fae507d5ef3ad0104458bb68318af7f748676b8e1d01e8ce9b003fb9f/http%3A//www.escapemotions.com/experiments/flame/%23top\" rel=\"nofollow\">http://www.escapemotions.com/experiments/flame/#top</a>\nEnjoy!"
}