To apply a pattern of superior three-dimensional feeling on a surface by coloring the surface in a manner of not completely masking abase having fire uneven emboss but seeing through the base and forming the walls of recessed thicker than those of projections.

For the purpose of forming the color different between recesses and projections, a base color of a base is not completely masked by a film of moderate masking properties, namely the base color can be seen through when a coated material is applied for shadowing recesses and projections by forming the walls of recesses thicker than those of projections. The tone of valley sections 12b is deeper visually, while the tone of crest sections 12a is slightly somber, and the variation is formed step by step all through from the crest sections 12a to the valley sections 12b on an intermediate section to form the continuous variation of the tone. Also a frosted or half-frosted transparent coating material 15 is applied overlappingly on a film 14 of a colored transparent coating material to provide the soft and quiet feeling and attractive look to match the outer appearance. Thus the shadowing of fine recesses and projections on the surface of a product is formed to provide the three- dimensional outer appearance.