Examine source code of F111 Sunset

{
  "theme": {
    "images": {
      "theme_frame": "F111SunsetP.jpg"
    },
    "colors": {
      "frame": "#c9ae16",
      "tab_background_text": "#fcf9f9"
    }
  },
  "version": "2.0",
  "name": "F111 Sunset",
  "manifest_version": 2,
  "description": "An F111 takes off as the sun goes down."
}