A Selective coloration process has been newly developed utilizing photosensitive gel films derived from metal-alkoxides chemically modified with β-diketones. Photosensitive ZrO₂ gel films modified with acetylacetone were irradiated with UV-light through a mask and then SiO₂ gel films containing various dyes were deposited on them. Rinsing these bilayers with water produced positive color patterns of the mask used. The dye-containing SiO₂ gel film on the unirradiated part of the ZrO₂ gel film remained, while that on the irradiated part was removed upon rinsing. This phenomenon can be ascribed to the difference in interaction between SiO₂ and ZrO₂ gel films in irradiated and unirradiated parts.