rs');
  gui.add(data, 'reflection');

  const darkColors = {
    base: '#DDD',
    background: '#444',
    text: '#FFF',
    textOutline: '#000',
    eyeToSurface: '#555',
  };
  const lightColors = {
    base: '#000',
    background: '#FFF',
    text: '#000',
    textOutline: '#FFF',
    eyeToSurface: '#F8F8F8',
  };

  const darkMatcher = window.matchMedia('(prefers-color-scheme: dark)');
  darkMatcher.addEventListener('change', render);

  function render() {
    const isDarkMode = darkMatcher.matches;
 