private void ColorPicker(List <Material> mat, string shaderParamName, string displayname = null)
{
if (displayname == null)
{
displayname = shaderParamName;
}
var picker = new JSONStorableColor(displayname, HSVColorPicker.RGBToHSV(1f, 1f, 1f),
c => mat.ForEach(m => m.SetColor(shaderParamName, c.colorPicker.currentColor))
);
script.RegisterColor(picker);
script.CreateColorPicker(picker, true);
}