Examine source code of Aqua Town

{
  "theme": {
    "images": {
      "theme_frame": "geog_blue_top.jpg"
    },
    "colors": {
      "frame": "#f7b2b2",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Aqua Town",
  "manifest_version": 2,
  "description": "This is my picture of Aqua Town rendered with Blender, 3D Graphics Application."
}