Optical and esthetic modification is a basic need for polymer application in all technical and consumer fields. Colorants are used in broad volume to satisfy the demand of costumers for that purpose. Mainly, colorants are included in a carrier polymer, which should help to dose the colorant precisely, to mix it homogeneously, to be compatible with the matrix, and it should not influence the mechanical and rheological properties unfavorably. A colorant masterbatch on the basis of polydimethylsiloxane-polyurea copolymer (PDHC) was proposed, which should warrant these demands in high manner. The masterbatch was generated by a specific twin screw extruder with liquid feeding unit for the liquid initial components polydimethylsiloxane (PDMS) and diisocyanate, and an optimized segmented mixing screw. As PDMS a pigment containing PDMS prepared in a pre-dispersion process was inserted. The precise adherence of the stoichiometric ratio of the initial components as well as the optimization of residence time of the polymer in the extruder in concern to the reaction time of the components allowed the generation of the PDHC based masterbatch. Different isocyanates and aminopropyl terminated PDMS with different molecular mass were used. The investigation of coloring effectivity and homogeneity was realized by a single screw extruder with flat die and chill roll device. A higher number of thermoplastics was involved into the investigation of the suitability of the generated masterbatches. Beside the nearly universal applicability of the masterbatch, the improvement of processability - expressed by lowering of the viscosity and reduction of energy consume of the extruder - could be demonstrated. The good dispersion of the pigment particles is demonstrated by optical microscopy. Stress-strain measurements proved that no significant negative influence of the new masterbatch in concentrations < 5 % on the mechanical properties of the investigated thermoplastics could be observed.