diff -aur vice-1.21.orig/src/arch/unix/x11/gnome/uicolor.c vice-1.21/src/arch/unix/x11/gnome/uicolor.c
--- vice-1.21.orig/src/arch/unix/x11/gnome/uicolor.c	2006-09-23 11:42:32.000000000 +0200
+++ vice-1.21/src/arch/unix/x11/gnome/uicolor.c	2007-05-30 23:20:09.000000000 +0200
@@ -166,7 +166,7 @@
        way to do this? //tvr */
     im = XCreateImage(display, GDK_VISUAL_XVISUAL(visual),
                       x11ui_get_display_depth(),
-                      ZPixmap, 0, (char *)data, 1, 1, 8, 1);
+                      ZPixmap, 0, (char *)data, 1, 1, 8, 0);
     if (!im) {
         log_error(LOG_DEFAULT, _("XCreateImage failed."));
         free(data);
diff -aur vice-1.21.orig/src/arch/unix/x11/xaw/uicolor.c vice-1.21/src/arch/unix/x11/xaw/uicolor.c
--- vice-1.21.orig/src/arch/unix/x11/xaw/uicolor.c	2003-06-24 15:17:32.000000000 +0200
+++ vice-1.21/src/arch/unix/x11/xaw/uicolor.c	2007-05-30 23:19:23.000000000 +0200
@@ -121,7 +121,7 @@
     /* This is a kludge to map pixels to zimage values. Is there a better
        way to do this? //tvr */
     im = XCreateImage(display, visual, x11ui_get_display_depth(),
-                      ZPixmap, 0, (char *)data, 1, 1, 8, 1);
+                      ZPixmap, 0, (char *)data, 1, 1, 8, 0);
     if (!im) {
         log_error(LOG_DEFAULT, _("XCreateImage failed."));
         free(data);