HiliteColor
#include <Quickdraw.h> Color Quickdraw
RGBColor *RGBColor ; requested red, green, blue components HiliteColor lets you change the highlighting color used by current cGrafPort.
RGBColor is a record type which specifies a color's red, green, and blue components as 16-bit unsigned integers.
Notes: Highlight color is used whenever a drawing operation uses the highlight
transfer mode. A cGrafPort's highlight colors are initialized from the
HiliteRGB global variable stored in the port's grafVars handle.