Examine source code of NASA Planet Sizes

{
  "theme": {
    "images": {
      "theme_frame": "NASAsolarsystemHeader.jpg"
    },
    "colors": {
      "frame": "#c2c2c2",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "NASA Planet Sizes",
  "manifest_version": 2,
  "description": "NASA graphic showing approximate sizes of the planets relative to each other. Graphic courtesy of NASA."
}