three.js/src/lights/Light.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 */

THREE.Light = function ( color ) {

	THREE.Object3D.call( this );

	this.type = 'Light';

	this.color = new THREE.Color( color );

};

THREE.Light.prototype = Object.create( THREE.Object3D.prototype );
THREE.Light.prototype.constructor = THREE.Light;

THREE.Light.prototype.copy = function ( source ) {
	
	THREE.Object3D.prototype.copy.call( this, source );
	
	this.color.copy( source.color );
	
	return this;

};