The 3D Gel Printer Soft and Wet Industrial Materials・Easy Realizer (SWIM-ER) developed by Furukawa et al. It can only perform modeling with monochrome. Therefore, it is thought that new elements will be born by developing a new 3D Gel Printer. However, there are many problems in developing it. In this study, we aim to develop a system that displays the composition of gels for obtaining color gels of target color, and apply it to gel printer. The color gels used pigments, and mixing them showed the change of color of the gels. Moreover, by mixing the pigments, gels with a wide range of color variations could be obtained.In the future, we will study the improvement of accuracy by collecting more samples and the technology to actually color the gels.