Examine source code of Celestial Haze

{
  "theme": {
    "images": {
      "theme_frame": "planetary.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#c4c4c4"
    }
  },
  "version": "2.0",
  "name": "Celestial Haze",
  "manifest_version": 2,
  "description": "Planets, Satellites, and Smaller Bodies Circling in a Purple Haze.\n\nFractal Scenery Created with Apophysis."
}