Need more appearance adjustment options in Creo Illustrate

Creo Illustrate has a very limited appearance adjustment. I would like to be able to adjust the “highlight “or “shininess” in the appearance color to make an object look more matte, to look more true to life. The colors give a shiny appearance.

Please add more adjustments for the appearance other than transparency and RGB values.

Creo Parametric has great appearance property adjustment options.