Remove the default root window grey stipple pattern, replacing it with
blackness.

--- Xserver/dix/window.c.die-ugly-pattern-die-die-die	Tue Feb 12 16:33:04 2002
+++ Xserver/dix/window.c	Tue Feb 12 16:45:32 2002
@@ -119,8 +119,8 @@
  *
  ******/
 
-static unsigned char _back_lsb[4] = {0x88, 0x22, 0x44, 0x11};
-static unsigned char _back_msb[4] = {0x11, 0x44, 0x22, 0x88};
+static unsigned char _back_lsb[4] = {0x00, 0x00, 0x00, 0x00};
+static unsigned char _back_msb[4] = {0x00, 0x00, 0x00, 0x00};
 
 int screenIsSaved = SCREEN_SAVER_OFF;