...
html_theme_options = {
    'repo_url': 'https://github.com/trinodb/trino',
    'repo_name': 'Trino',
    'icon': {
        'repo': 'fontawesome/brands/github-alt'
    },
    'version_json': '../versions.json',
    'palette': [
        {
            'media': '(prefers-color-scheme)',
            'scheme': 'default',
            'toggle': {
                'icon': 'material/brightness-auto',
                'name': 'Switch to light mode',
            }
        },
        {
            'media': '(prefers-color-scheme: light)',
            'scheme': 'default',
            'toggle': {
                'icon': 'material/weather-sunny',
                'name': 'Switch to dark mode',
            }
        },
        {
            'media': '(prefers-color-scheme: dark)',
            'scheme': 'slate',
            'toggle': {
                'icon': 'material/weather-night',
                'name': 'Switch to system preference',
            }
        },
    ],
    'font': {
        'text': 'Roboto',
        'code': 'Roboto Mono'
    },
    'features': [
        'navigation.expand',
        'navigation.top',
        'navigation.path',
        'search.highlight',
        'search.share',
        'toc.follow',
        'toc.integrate'
    ]
}
...