<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Spark â€¢ Debug Coloring</title>
  <style>
    body {
      margin: 0;
    }
    canvas {
      touch-action: none;
    }
  </style>
</head>

<body>
  <script type="importmap">
    {
      "imports": {
        "three": "/examples/js/vendor/three/build/three.module.js",
        "@sparkjsdev/spark": "/dist/spark.module.js"
      }
    }
  </script>
  <script type="mod