Examine source code of Ubuntu Gold

{
  "theme": {
    "images": {
      "theme_frame": "ubuntu_gold1.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffcc"
    }
  },
  "version": "2.0",
  "name": "Ubuntu Gold",
  "manifest_version": 2,
  "description": "gracias por descargar mis personas para firefox, aqui les dejo este dedicado a ubuntu linux. :)\n\nthanks for download my personas for firefox, here I leave this dedicated to ubuntu linux. :)"
}