Examine source code of Storm the Castle

{
  "name": "Storm the Castle",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "StormCastle.jpg"
    },
    "colors": {
      "frame": "#243030",
      "tab_background_text": "rgba(158, 247, 247, 1)",
      "toolbar": "rgba(255, 255, 255, 0.23)",
      "bookmark_text": "rgba(214, 255, 254, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0.27)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(0, 255, 255, 0.79)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{85a9828c-88b7-4831-9a27-7df67645c1c2}"
    }
  }
}