HP PCL/PJL reference (PCL 5 Color) - Technical Reference Manual

D-2 Modifying Output Color (Color LaserJet, 5, 5M, DeskJet) EN
The Driver Configuration command provides a way for a driver
to calibrate the output by adjusting color lightness, saturation,
and color map information.
All of these methods of modifying output color are explained in the
following sections.