Examine source code of Totally Halloween

{
  "theme": {
    "images": {
      "theme_frame": "spies-hallo-header.JPG"
    },
    "colors": {
      "frame": "#ff6c03",
      "tab_background_text": "#ff6c03"
    }
  },
  "version": "2.0",
  "name": "Totally Halloween",
  "manifest_version": 2,
  "description": "The totally spies are ready for some Halloween crime fighting! - Banner from: <a href=\"https://outgoing.prod.mozaws.net/v1/4eaf59675d6f12dff664e0f94afea0acd7dec1a80af1579a32844e00ba965622/http%3A//www.woohp.org/\" rel=\"nofollow\">http://www.woohp.org/</a>"
}