code: function( c ){
              var isInRange = this.isValueInConstraint(c.hue(), this.hueConstraint);
              isInRange &= this.isValueInConstraint(c.saturation(), this.saturationConstraint);
              isInRange &= this.isValueInConstraint(c.brightness(), this.brightnessConstraint);
              isInRange &= this.isValueInConstraint(c.alpha(), this.alphaConstraint);
              return isInRange || false; //if its 0, return false
          }
docs: checks if all HSVA components of the given color are within
  the constraints define for this range
  @param {toxi.color.TColor} c
  @return true if is contained