We may determine the input variables to select the colors by different methods such as reading the pixel and from this determine the RGB components of each color, the drawback of this method is that the paint has a different behavior with digital systems because there are components which degrade the color, for this reason we designed a fuzzy controller based on experimentation, the Fig. 4 shows that we have adjusted the CMY components according to the actual behavior of paint raw materials as an expert system.