How to use the @babylonjs/core.Color3.White function in @babylonjs/core

material.emissiveColor = new Color3(0.5, 0.5, 0.5);
      material.alpha = 0.2;
      material.specularPower = 16;

      // Fresnel
      material.reflectionFresnelParameters = new FresnelParameters();
      material.reflectionFresnelParameters.bias = 0.1;

      material.emissiveFresnelParameters = new FresnelParameters();
      material.emissiveFresnelParameters.bias = 0.6;
      material.emissiveFresnelParameters.power = 4;
      material.emissiveFresnelParameters.leftColor = Color3.White();
      material.emissiveFresnelParameters.rightColor = Color3.Black();

      material.opacityFresnelParameters = new FresnelParameters();
      material.opacityFresnelParameters.leftColor = Color3.White();
      material.opacityFresnelParameters.rightColor = Color3.Black();
      if(index === 0){
        this.logoTween.to(mesh.scaling, 2, { x: 4, y: 4, z: 4 })
        this.logoTween.to(mesh.scaling, 2, { x: 2, y: 2, z: 2 })
        this.logoTween.to(mesh.rotation, 1, { x: 1, y: 1, z: 1 })
        this.logoTween.play();
      }
      mesh.material = material;  
    }) 
  }

  default: () => Color3.White().toColor4(),
};

var camera = new FreeCamera('camera1', new Vector3(0, 0.3, -0.7), scene)
  camera.speed = 0.01
  camera.minZ = 0.001
  scene.activeCameras.push(camera)
  camera.attachControl(canvas, true)
  var light = new HemisphericLight('light1', new Vector3(0, 1, 0), scene)
  light.intensity = 0.7
  var pbr = new PBRMetallicRoughnessMaterial('pbr', scene)
  pbr.environmentTexture = CubeTexture.CreateFromPrefilteredData('assets/textures/environment.dds', scene)
  var gridSize = 4
  for (var i = 0; i < gridSize; i++) {
    for (var j = 0; j < 10; j++) {
      var sphereMat = pbr.clone()
      sphereMat.metallic = 0.1
      sphereMat.roughness = (i / gridSize) / 3
      sphereMat.baseColor = Color3.White().scale(1 - (j / 10))
      var sphere = Mesh.CreateSphere('sphere', 16, 0.2, scene)
      sphere.material = sphereMat
      sphere.position.y = i * 0.3
      sphere.position.x = 0.3
      sphere.position.z = j * 0.4

      var cubeMat = pbr.clone()
      cubeMat.metallic = 0.6
      cubeMat.roughness = (i / gridSize) / 3
      cubeMat.baseColor = Color3.White().scale(1 - (j / 10))
      var box = Mesh.CreateBox('box', 0.2, scene)
      box.material = cubeMat
      box.position.y = i * 0.3
      box.position.x = -0.3
      box.position.z = j * 0.4
    }

  default: () => Color3.White(),
};