1, bas-relief color plastic is to put bas-relief such as patterns and images in grottoes and then color them. The manufacturing process of this colored plastic is very fine. It is necessary to carve patterns on the grottoes first, then fill the patterns with fine soil, and finally color them with pigments.

2. High-relief color sculpture is to carve the sculpture itself in the grotto niche and then color it. This kind of colored sculpture requires the sculptor to have a very deep understanding of the material and texture of the stone.