XColormapEvent - ColormapNotify event structure
The structure for ColormapNotify events contains:
typedef struct {
int type; ColormapNotify
unsigned long serial; # of last request processed by server
Bool send_event; true if this came from a SendEvent request
Display *display; Display the event was read from
Window window;
Colormap colormap; colormap or None
Bool new;
int state; ColormapInstalled, ColormapUninstalled
} XColormapEvent;