Examine source code of Peak District 1

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#a0a26b",
      "tab_background_text": "#40463c"
    }
  },
  "version": "2.0",
  "name": "Peak District 1",
  "manifest_version": 2,
  "description": "Cales Dale joins Lathkill Dale in the Peak District National Park, Derbyshire. Taken on a hike in July 2006."
}