Examine source code of Sleeping Cat and Mouse

{
  "theme": {
    "images": {
      "theme_frame": "sleepyCatandMouseH.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#080808"
    }
  },
  "version": "2.0",
  "name": "Sleeping Cat and Mouse",
  "manifest_version": 2,
  "description": "cat, kitten, mouse, cartoon, cute, children, night, nap, sleeping. My matching desktop wallpaper can be found at: <a href=\"https://outgoing.prod.mozaws.net/v1/78ef6af616b61a99baf0da9cd759244d399ab01c7df4ceb3ac9a345c1fe30054/http%3A//animals.desktopnexus.com/wallpaper/618839/\" rel=\"nofollow\">http://animals.desktopnexus.com/wallpaper/618839/</a>"
}