Is color subsurface laser engraving feasible?

    It is certain that subsurface laser engraving will be colorful in the future. We know that the engraving part of crystal has a good reflection and refraction against lights, and the blank part has a good permeability of light, therefore, we can use the three basic color palette principle of micro-control circuit to control several color lamps and conduct color blending on the sub-engraving images, in this way, many colors will be created to make the original white sub-engraving images colorful.