Examine source code of The mountains which join it.

{
  "theme": {
    "images": {
      "theme_frame": "jj0119-mt-tokimeku--soraironisita-sy.jpg"
    },
    "colors": {
      "frame": "#f2e6e6",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "The mountains which join it.",
  "manifest_version": 2,
  "description": "仲間入りをしたい山々。"
}