Examine source code of Helios aircraft

{
  "theme": {
    "images": {
      "theme_frame": "lightweighttheme-header.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Helios aircraft",
  "manifest_version": 2,
  "description": "Helios, evolutionary solar unmanned aircraft developed under NASA's Environmental Research Aircraft and Sensor Technology (ERAST) program.\n\nThe Persona was produced from a photograph which is in public domain because it was created by NASA."
}