Examine source code of cat&dog

{
  "theme": {
    "images": {
      "theme_frame": "catdogcopy.JPG"
    },
    "colors": {
      "frame": "#d1c9c9",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "cat&dog",
  "manifest_version": 2,
  "description": "A unique friendship!\n<a href=\"https://outgoing.prod.mozaws.net/v1/4429e7ebeba1674c0235a0d0837c1a61d474c64b352a5526c88a6a0fcddeffe0/http%3A//www.spytodie4.info\" rel=\"nofollow\">www.spytodie4.info</a>"
}