Examine source code of Raiding Indy

{
  "theme": {
    "images": {
      "theme_frame": "Indy-header.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Raiding Indy",
  "manifest_version": 2,
  "description": "Indiana Jones art by Adam Hughes: <a href=\"https://outgoing.prod.mozaws.net/v1/7671970b790aae92590eedee7a8cf2be8e3506ea501889dff8639e2a1aefd5d2/http%3A//adamhughes.deviantart.com/\" rel=\"nofollow\">http://adamhughes.deviantart.com/</a>"
}