Examine source code of TGV Duplex

{
  "theme": {
    "images": {
      "theme_frame": "TGV-Header-2.jpg"
    },
    "colors": {
      "frame": "#5883db",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "TGV Duplex",
  "manifest_version": 2,
  "description": "TGV Duplex on the way from Paris to Lyon near Taizé, Burgundy.\nPicture size optimized for 1366x768px screens.\nThanks for use,\nMrKaizer :)"
}