Examine source code of Iceland Hekla

{
  "theme": {
    "images": {
      "theme_frame": "iceland_5_header.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Iceland Hekla",
  "manifest_version": 2,
  "description": "Hekla is one of Iceland's most active volcanoes; over 20 eruptions have occurred in and around the volcano since 874. During the Middle Ages, Icelanders called the volcano the \"Gateway to Hell.\""
}