Color.js

/**
 * @author mr.doob / http://mrdoob.com/
 */

THREE.Color = function ( hex ) {

	var _r, _g, _b, _a, _hex;

	this.__styleString = "rgba(0, 0, 0, 1)";

	this.setHex = function ( hex ) {

		_hex = hex;
		this.updateRGBA();
		this.updateStyleString();

	};

	this.setRGBA = function ( r, g, b, a ) {

		_r = r;
		_g = g;
		_b = b;
		_a = a;

		this.updateHex();
		this.updateStyleString();

	};

	this.updateHex = function () {

		_hex = Math.floor( _a * 255 ) << 24 | _r << 16 | _g << 8 | _b;

	};

	this.updateRGBA = function () {

		_r = _hex >> 16 & 0xff;
		_g = _hex >> 8 & 0xff;
		_b = _hex & 0xff;
		_a = (_hex >> 24 & 0xff) / 255;

	};

	this.updateStyleString = function () {

		this.__styleString = 'rgba(' + _r + ',' + _g + ',' + _b + ',' + _a + ')';

	};

	this.toString = function () {

		return 'THREE.Color ( r: ' + _r + ', g: ' + _g + ', b: ' + _b + ', a: ' + _a + ', hex: ' + _hex + ' )';

	};

	this.setHex( hex );

};