verifyChannel = function verifyChannel(aColor) {
      if (aColor.constructor === Array) {
        return aColor;
      } else {
        return p.color(aColor);
      }
    }
Extracts the hue value from a color.

@param {color} colInt any value of the color datatype

@returns {float} The hue color value.

@see red
@see green
@see blue
@see saturation
@see brightness