--- grub-2.00.orig/util/grub-mkconfig.in
+++ grub-2.00/util/grub-mkconfig.in
@@ -216,7 +216,10 @@ export GRUB_DEFAULT \
   GRUB_INIT_TUNE \
   GRUB_SAVEDEFAULT \
   GRUB_ENABLE_CRYPTODISK \
-  GRUB_BADRAM
+  GRUB_BADRAM \
+  GRUB_WALLPAPER \
+  GRUB_COLOR_NORMAL \
+  GRUB_COLOR_HIGHLIGHT
 
 if test "x${grub_cfg}" != "x"; then
   rm -f "${grub_cfg}.new"