code: function ShadowMaterial( parameters ) {
  
  	Material.call( this );
  
  	this.type = 'ShadowMaterial';
  
  	this.color = new Color( 0x000000 );
  	this.transparent = true;
  
  	this.setValues( parameters );
  
  }
docs: @author mrdoob / http://mrdoob.com/
  
  parameters = {
  color: <THREE.Color>
  }