Examine source code of Witch Light

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#121111",
      "tab_background_text": "#ffdb99"
    }
  },
  "version": "2.0",
  "name": "Witch Light",
  "manifest_version": 2,
  "description": "Happy Halloween!\n\nStock image credit: MarjoleinART-Stock\n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/5adad12ae06422d43765d92e67a77a5429882cf1ee83a888f6cdb58234883c18/http%3A//marjoleinart-stock.deviantart.com/art/Halloween-2008-1st-Shoot-88-96803995\">http://marjoleinart-stock.deviantart.com/art/Halloween-2008-1st-Shoot-88-96803995</a>"
}