Examine source code of On the summit

{
  "theme": {
    "images": {
      "theme_frame": "summitheader.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "On the summit",
  "manifest_version": 2,
  "description": "Walkers resting at the summit of \"Pike O' Blisco in the Lake District, with Crinkle Crags and Bow Fell in the Background."
}