three.js:如何将材质数组添加到八面体几何体

var geometry = new THREE.OctahedronGeometry();

var materials = [
  new THREE.MeshBasicMaterial({ color: 0xff0000 }),
  new THREE.MeshBasicMaterial({ color: 0x00ff00 }),
  new THREE.MeshBasicMaterial({ color: 0x0000ff }),
  new THREE.MeshBasicMaterial({ color: 0xffff00 }),
  new THREE.MeshBasicMaterial({ color: 0xff00ff }),
  new THREE.MeshBasicMaterial({ color: 0x00ffff })
];

var mesh = new THREE.Mesh(geometry, materials);

scene.add(mesh);