RGBColor
RGBColor structure
#include <Quickdraw.h>
typedef struct RGBColor { Size Offset Description
unsigned short red; 2 0 red component
unsigned short green; 2 2 green component
unsigned short blue; 2 4 blue component

Notes: Color Manager supplies the values for the red, green, and blue
components when the color is drawn. Values actually appearing will vary
depending on the capabilities of the current device.