private void OnRandomClick()
{
Vector3 hsb;
hsb.x = Random.value;
hsb.y = Mathf.Lerp(picker.saturationRange.x, picker.saturationRange.y, Random.value);
hsb.z = Mathf.Lerp(picker.brightnessRange.x, picker.brightnessRange.y, Random.value);
picker.SetHSB(hsb);
UpdateSlider();
}
