function ColorMatrix(brightness, contrast, saturation, hue) {
		this.setColor(brightness, contrast, saturation, hue);
	}
Provides helper functions for assembling a matrix for use with the {{#crossLink "ColorMatrixFilter"}}{{/crossLink}}.
Most methods return the instance to facilitate chained calls.

<h4>Example</h4>

     myColorMatrix.adjustHue(20).adjustBrightness(50);

See {{#crossLink "Filter"}}{{/crossLink}} for an example of how to apply filters, or {{#crossLink "ColorMatrixFilter"}}{{/crossLink}}
for an example of how to use ColorMatrix to change a DisplayObject's color.
@class ColorMatrix
@param {Number} brightness
@param {Number} contrast
@param {Number} saturation
@param {Number} hue
@constructor