Abstract: A process for decorating and/or coloring tile- or slab-shaped stone-like artificial or composite materials comprises the application of one or more sublimate colors to the surface to be decorated and/or colored, said application being carried out at a temperature range from about 50.degree. C. to 250.degree. C., said sublimate colors being supported on a suitable carrier. A natural or synthetic resin is mixed into the original composition of said artificial material in order to enhance the migration of color pigments through the tile or slab surface during the sublimation process. Thereby a good penetration of the color into the slab is achieved, and the color is still visible even after having removed the polished surface of the slabs by means of grinding.