Examine source code of Dagger 3

{
  "theme": {
    "images": {
      "theme_frame": "Dagger3.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Dagger 3",
  "manifest_version": 2,
  "description": "knife, sharp, blade, dragon, star, light, fancy, My wallpaper to match can be found at: <a href=\"https://outgoing.prod.mozaws.net/v1/8ab1b00fe45627c5b615e14dc0ea5d1a739fbf2401e33ad28341592bd8038aea/http%3A//abstract.desktopnexus.com/wallpaper/689317/\" rel=\"nofollow\">http://abstract.desktopnexus.com/wallpaper/689317/</a>"
}