diff -Nurp grub-1.98.orig/util/grub-mkconfig.in grub-1.98/util/grub-mkconfig.in
--- grub-1.98.orig/util/grub-mkconfig.in	2010-03-06 21:51:37.000000000 +0100
+++ grub-1.98/util/grub-mkconfig.in	2010-04-12 11:29:28.396075050 +0200
@@ -224,7 +224,10 @@ export GRUB_DEFAULT \
   GRUB_GFXPAYLOAD_LINUX \
   GRUB_DISABLE_OS_PROBER \
   GRUB_INIT_TUNE \
-  GRUB_SAVEDEFAULT
+  GRUB_SAVEDEFAULT \
+  GRUB_WALLPAPER \
+  GRUB_COLOR_NORMAL \
+  GRUB_COLOR_HIGHLIGHT
 
 if test "x${grub_cfg}" != "x"; then
   rm -f ${grub_cfg}.new