addColorMap( name, arrayOfColors ) {

		ColorMapKeywords[ name ] = arrayOfColors;

		return this;

	}
Adds a color map to this Lut instance.

@param {string} name - The name of the color map.
@param {Array} arrayOfColors - An array of color values. Each value is an array
holding a threshold and the actual color value as a hexadecimal number.
@return {Lut} A reference to this LUT.