To enhance the realistic appearance of objects, reflection from environment lighting can be created on the object surface. The dimness element serves to set the value of reflection of an active object. The reflection values may range between 0 and 128. By setting the dimness to 0 and by setting the reflectance color to black color the reflection will be switched off. Dimness value 5 is used for a metallic surface. With increasing dimness degree the amount of reflection is diminishing. Dimness having a value of about 50 is used for a plastic surface.