Examine source code of Taking It In

{
  "theme": {
    "images": {
      "theme_frame": "11.png"
    },
    "colors": {
      "frame": "#c0c0c0",
      "tab_background_text": "#c0c0c0"
    }
  },
  "version": "2.0",
  "name": "Taking It In",
  "manifest_version": 2,
  "description": "New Mexico sky at dusk with silhouettes taking in the view."
}