Examine source code of Jetstar

{
  "theme": {
    "images": {
      "theme_frame": "Jetstar.jpg"
    },
    "colors": {
      "frame": "#b4b4b4",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Jetstar",
  "manifest_version": 2,
  "description": "Jetstar Airways is an Australian low-cost airline headquartered in Melbourne, Victoria, Australia. It is a subsidiary of Qantas."
}