Examine source code of Windows 11 Dark Mode

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Windows 11 Dark Mode",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(59, 59, 59)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(32, 32, 32)",
      "tab_background_text": "rgb(137, 137, 136)",
      "toolbar_field": "rgb(32, 32, 32)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(32, 32, 32)",
      "popup": "rgb(59, 59, 59)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(32, 32, 32)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{967a23f3-2ff1-4e84-a023-dbe7fca91f47}"
    }
  }
}