code: function(theta, delta) {
  		var angle = mathUtils.degrees(theta);
  		this.rotateRYB(angle * mathUtils.normalizedRandom());
  		this.hsv[1] += delta * mathUtils.normalizedRandom();
  		this.hsv[2] += delta * mathUtils.normalizedRandom();
  		return this.setHSV(this.hsv);
  	}
docs: Rotates this color by a random amount (not exceeding the one specified)
  and creates variations in saturation and brightness based on the 2nd
  parameter.
  @param theta
  max. rotation angle (in radians)
  @param delta
  max. sat/bri variance
  @return itself