Examine source code of MountEverest

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#c7c7c7",
      "tab_background_text": "#eb5959"
    }
  },
  "version": "2.0",
  "name": "MountEverest",
  "manifest_version": 2,
  "description": "Mount Everest is the largest and highest mountain in the world.\nIt is about 8,848 metres (29,029 ft) high. It lies in nepal"
}