2. A color conversion method as recited in claim 1, comprising the following additional steps: receiving PostScript commands that specify transfer functions that are to be applied to components of the device-dependent color specifications, such transfer functions being standard PostScript operations; converting the received transfer functions for use with the internal color specifications; applying the converted transfer functions to components of the internal color specifications.
1. In a PostScript graphics language interpreter that accepts PostScript commands indicating both device-dependent and device-independent color specifications, wherein the graphics language interpreter converts the device-dependent and device independent color specifications to internal color specifications before rendering, a color conversion method comprising the following steps: converting device-independent color specifications to device-dependent color specifications using a standard PostScript color rendering dictionary; converting device-dependent color specifications, including those converted from the device-independent color specifications, to internal color specifications using a calibrated n-dimensional operation that is not a standard PostScript operation, where n is greater than 1.