Examine source code of The Chicago Cubs

{
  "theme": {
    "images": {
      "theme_frame": "cubsbackgroundtop.png"
    },
    "colors": {
      "frame": "#818181",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "The Chicago Cubs",
  "manifest_version": 2,
  "description": "White Text. Gray Accent. Blue <a href=\"https://outgoing.prod.mozaws.net/v1/1e7c0c0a481d92564af1bd55639adf83da7da5b135017c4064f4be7f996b8cad/http%3A//cubs.com\" rel=\"nofollow\">cubs.com</a> background with cubs logo."
}