Wrong grub background after update-grub

[ovdeathiam]

The newly generated file /boot/grub/grub.cfg is missing lines 90,91,92 compared to the livecd or postinstallation file.

Fresh installation of Ubuntu 13.04 /boot/grub/grub.cfg contains these lines (87-93):
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
if background_color 44,0,30; then
  clear
fi
### END /etc/grub.d/05_debian_theme ###

When I use update-grub the whole if function is missing resulting in a monochromatic grub theme instead of the default background color:
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: grub-common 2.00-13ubuntu2
ProcVersionSignature: Ubuntu 3.8.0-16.26-generic 3.8.5
Uname: Linux 3.8.0-16-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.9.2-0ubuntu5
Architecture: amd64
Date: Mon Apr 8 06:42:47 2013
InstallationDate: Installed on 2013-03-24 (14 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130324)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=pl:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
SourcePackage: grub2
UpgradeStatus: No upgrade log present (probably fresh install)

[Marcus Tomlinson (marcustomlinson)]

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

[Launchpad Janitor (janitor)]

[Expired for grub2 (Ubuntu) because there has been no activity for 60 days.]