Examine source code of Girl Fish

{
  "theme": {
    "images": {
      "theme_frame": "fish.jpg"
    },
    "colors": {
      "frame": "#1f0303",
      "tab_background_text": "#efdafa"
    }
  },
  "version": "2.0",
  "name": "Girl Fish",
  "manifest_version": 2,
  "description": "Here's a cute girl swimming with a large fish, this cartoon is a wonderful way to splash some color onto your browser. By cartoonist John-Marc Grob.\n<a href=\"https://outgoing.prod.mozaws.net/v1/32bf72f1d758d5d377177773c142aa6a7f670dc24ac270bf970655cdf7e1091d/http%3A//www.jmgstudio.net\" rel=\"nofollow\">www.jmgstudio.net</a>"
}