extern void XSetForeground P_ ((Display *, GC, unsigned long));
extern void XSetBackground P_ ((Display *, GC, unsigned long));
extern void XSetWindowBackground P_ ((Display *, WindowPtr, unsigned long));
extern void XSetForeground P_ ((Display *, GC, unsigned long));
extern void XSetBackground P_ ((Display *, GC, unsigned long));
extern void XSetWindowBackground P_ ((Display *, WindowPtr, unsigned long));