Examine source code of YSFlight

{
  "theme": {
    "images": {
      "theme_frame": "persona3.JPG"
    },
    "colors": {
      "frame": "#448cb3",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "YSFlight",
  "manifest_version": 2,
  "description": "YSFlight Flight Simulator"
}