Examine source code of Halloweentown

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#1f1f30",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Halloweentown",
  "manifest_version": 2,
  "description": "Debbie Reynolds as Aggie Cromwell\nKimberly J. Brown\t as Marnie Piper\n\nStock credit: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/b2ea2b4d019d8d6339f2d9f1581db605a54fde9d473c88165aeca827ea8b2da8/https%3A//pixabay.com/en/users/rkarkowski-289667/\">Robert Karkowski </a>"
}