Examine source code of Fish Scene

{
  "theme": {
    "images": {
      "theme_frame": "fish3.jpg"
    },
    "colors": {
      "frame": "#0a0909",
      "tab_background_text": "#f5f2f2"
    }
  },
  "version": "2.0",
  "name": "Fish Scene",
  "manifest_version": 2,
  "description": "Underwater with fish."
}