Examine source code of Jaguar XK

{
  "theme": {
    "images": {
      "theme_frame": "jag.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Jaguar XK",
  "manifest_version": 2,
  "description": "Important! This design is ideal for 200 pixel settings which you can achieve by going to View/Toolbars/Customize and adding new toolbars.\nJaguar XK black silver grey blue sports car racing."
}