Examine source code of Fall Night Lights

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#362b1e",
      "tab_background_text": "#fff3e8"
    }
  },
  "version": "2.0",
  "name": "Fall Night Lights",
  "manifest_version": 2,
  "description": "Stock credit: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/bdcc5ddfc5bd740d33b39cac8eb913348055f87d746921fc4989710017fb183d/https%3A//pixabay.com/en/users/FelixMittermeier-4397258/\">FelixMittermeier\n</a>"
}