Examine source code of Cairo Tower

{
  "theme": {
    "images": {
      "theme_frame": "23.jpg"
    },
    "colors": {
      "frame": "#0ee815",
      "tab_background_text": "#f29109"
    }
  },
  "version": "2.0",
  "name": "Cairo Tower",
  "manifest_version": 2,
  "description": "Night view of Cairo"
}