1. A method of creating a color-mapping lookup table, comprising: obtaining color-space data for respective solid colors specified as lattice points of the color-mapping lookup table; obtaining color-space data for respective achromatic colors specified as lattice points of the color-mapping lookup table; and tabulating the color-space data for the respective solid colors specified as the lattice points and the color-space data for the respective achromatic colors specified as the lattice points.