Examine source code of Yosemite Half Dome

{
  "theme": {
    "images": {
      "theme_frame": "HalfdomePanoramascreen7940.jpg"
    },
    "colors": {
      "frame": "#a3f7e9",
      "tab_background_text": "#0b2e03"
    }
  },
  "version": "2.0",
  "name": "Yosemite Half Dome",
  "manifest_version": 2,
  "description": "Yosemite panorama including Half Dome."
}