Examine source code of Large Fireworks

{
  "theme": {
    "images": {
      "theme_frame": "Firework-1-Head.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Large Fireworks",
  "manifest_version": 2,
  "description": "Werde Fan von meiner Facebook Seite und du bekommst täglich neue Styles zu Testen und Benutzen !\n\nBecome a fan of my Facebook page every day and you get new styles to try and use!\n\n<a href=\"https://outgoing.prod.mozaws.net/v1/516dd05398239c24749424046e59bf73fdf877fab7ad34dc0819a43fb417979a/https%3A//www.facebook.com/FirefoxPersonasByTobias\" rel=\"nofollow\">https://www.facebook.com/FirefoxPersonasByTobias</a>"
}