A method of coloring pre-sintered dental restoration, comprises: securing a pre-sintered dental restoration； applying a preceding liquid on the dental restoration； dipping the dental restoration, with the preceding liquid thereon, into a subsequent liquid for coloring； and sintering the dental restoration to acquire a fully sintered dental restoration. The subsequent liquid is different from the preceding liquid. The preceding liquid at least partly blocks or interferes with an infiltration of the subsequent liquid into an area where the preceding liquid was applied. The fully sintered dental restoration has less color/chroma in the area where the preceding liquid was applied.
