Examine source code of Monuments

{
  "theme": {
    "images": {
      "theme_frame": "IMG_0351pano1d.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Monuments",
  "manifest_version": 2,
  "description": "Monument Valley in July 2009"
}