"MATCOLOR MaterialID&, RGBColor&, Reflective&, Shiny&"
This command defines a material (or changes and existing one) as a solid color.
MaterialID& - is the ID (index) of the material. (0 to 999)
RGBColor& - is the RGB color
Reflective& - 0 to 100
Shiny& - 0 to 100
