Examine source code of Eilean Donan Castle

{
  "name": "Eilean Donan Castle",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "3eilean-donan-castle-panorama-grant-glendinning2.jpg"
    },
    "colors": {
      "frame": "rgba(112, 162, 199, 1)",
      "tab_background_text": "rgba(61, 61, 61, 1)",
      "toolbar": "rgba(255, 255, 255, 0.3)",
      "bookmark_text": "rgba(61, 61, 61, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.5)",
      "toolbar_field_text": "rgba(61, 61, 61, 1)",
      "tab_line": "rgba(255, 255, 255, 0.75)"
    }
  }
}