Examine source code of CakeBunny

{
  "theme": {
    "images": {
      "theme_frame": "header_1JPEG.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "CakeBunny",
  "manifest_version": 2,
  "description": "Pop and fun theme from my pop-manga-poster \"CakeBunny\".\n\nFeel free to see the original image here:\n<a href=\"https://outgoing.prod.mozaws.net/v1/5aa6fdc59daca5d23b74432c8f899f05c15e3bb97c260314beae9a6c3b89b0cf/http%3A//fav.me/d30bpde\" rel=\"nofollow\">http://fav.me/d30bpde</a>"
}