Examine source code of MacOS Sonoma Dark

{
  "name": "MacOS Sonoma Dark",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "sonoma.png"
    },
    "colors": {
      "frame": "rgba(176, 176, 176, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(46, 46, 46, 0.8)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(13, 13, 13, 0.23)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(11, 3, 255, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9efb9c3d-5628-41d0-b720-1867021a6651}"
    }
  }
}