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

onMount(instance: CreatedInstance): void {
    this.addControls(instance)

    if (instance.customProps.createForParentMesh) {
      // console.log('for parent mesh', instance.parent ? instance.parent.babylonJsObject : 'error: no parent object')

      let mesh: Mesh = instance.parent!.hostInstance // should crawl parent hierarchy for a mesh
      // console.error('we will be attaching the mesh:', mesh.name, mesh);

      const material = new StandardMaterial("AdvancedDynamicTextureMaterial", mesh.getScene())
      material.backFaceCulling = false
      material.diffuseColor = Color3.Black()
      material.specularColor = Color3.Black()

      if(instance.hostInstance === undefined) {
        console.error('missing instance')
      } else {
        if (this.props.hasAlpha) {
          material.diffuseTexture = instance.hostInstance
          material.emissiveTexture = instance.hostInstance
          instance.hostInstance.hasAlpha = true
        } else {
          material.emissiveTexture = instance.hostInstance
          material.opacityTexture = instance.hostInstance
        }
      }

      mesh.material = material

onMount(instance: CreatedInstance): void {
    this.addControls(instance)

    if (instance.customProps.createForParentMesh) {
      // console.log('for parent mesh', instance.parent ? instance.parent.babylonJsObject : 'error: no parent object')

      let mesh: Mesh = instance.parent!.hostInstance // should crawl parent hierarchy for a mesh
      // console.error('we will be attaching the mesh:', mesh.name, mesh);

      const material = new StandardMaterial("AdvancedDynamicTextureMaterial", mesh.getScene())
      material.backFaceCulling = false
      material.diffuseColor = Color3.Black()
      material.specularColor = Color3.Black()

      if(instance.hostInstance === undefined) {
        console.error('missing instance')
      } else {
        if (this.props.hasAlpha) {
          material.diffuseTexture = instance.hostInstance
          material.emissiveTexture = instance.hostInstance
          instance.hostInstance.hasAlpha = true
        } else {
          material.emissiveTexture = instance.hostInstance
          material.opacityTexture = instance.hostInstance
        }
      }

      mesh.material = material

let material = new StandardMaterial("kosh", scene);
      material.reflectionTexture = new CubeTexture("assets/textures/TropicalSunnyDay", scene);
      material.diffuseColor = new Color3(0, 0, 0);
      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;  
    }) 
  }

if (plane) {
                let forwardRay = camera.getForwardRay()
                plane.position = camera.position.clone().add(forwardRay.direction.scale(1.5 / camera.fov /* * forwardRay.length */))
                plane.lookAt(camera.position, 0, Math.PI, Math.PI)
              }
            }}
          />
          
          
            
          
          
            
          
          
            
          
          {this.state.showModal === true &&

      default: () => Color3.Black(),
    },