Identifies medical pseudo-coloring schemes.

Values:

MED_PSEUDOCOLOR_OFF	Reset to Grayscale.
MED_PSEUDOCOLOR_OIL_FILM	Oil Film.
MED_PSEUDOCOLOR_DARK_BLUE_TO_BRIGHT_RED	Dark Blue to Bright Red.
MED_PSEUDOCOLOR_GREEN_TO_RED	Green to Red.
MED_PSEUDOCOLOR_RED_GREEN_BLUE	Red, Green, Blue.
MED_PSEUDOCOLOR_THERMAL	Thermal.
MED_PSEUDOCOLOR_BRIGHT_RAINBOW	Bright Rainbow.