Examine source code of Ciudades

{
  "theme": {
    "images": {
      "theme_frame": "IMG_1834.JPG"
    },
    "colors": {
      "frame": "#c7b7b7",
      "tab_background_text": "#011209"
    }
  },
  "version": "2.0",
  "name": "Ciudades",
  "manifest_version": 2,
  "description": "La vida en la ciudad"
}