Examine source code of Ambiance Refined

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#cfcdc4",
      "tab_background_text": "#d2bf80"
    }
  },
  "version": "2.0",
  "name": "Ambiance Refined",
  "manifest_version": 2,
  "description": "To be used with the Ambiance Refined GTK2 Theme created by LordPickle. You can download it in <a href=\"https://outgoing.prod.mozaws.net/v1/deee7f0aff4f973d83288ea52840980190797bf37fd5a731b40dffe4e54380e8/http%3A//gnome-look.org\" rel=\"nofollow\">gnome-look.org</a>."
}