BURG is a program based-on Grub 2,BURG uses new menu list,screen layout and shortcut keys that all easily customized.Following is tested in Ubuntu Karmic.

Update: Burg has released a first version front-end GUI called Burg-Manager. Read more

1.Install BURG
Edit source.list file(Open terminal from Applications/Accessories/Terminal):

sudo gedit /etc/apt/sources.list

add following into the file and save it.

deb http://ppa.launchpad.net/bean123ch/burg/ubuntu karmic main
deb-src http://ppa.launchpad.net/bean123ch/burg/ubuntu karmic main

Add GPG key:

gpg --keyserver subkeys.pgp.net --recv 55708F1EE06803C5
gpg --export --armor 55708F1EE06803C5 | sudo apt-key add -

update and install:

sudo apt-get update
sudo apt-get install grub-pc

Then,write the new startup code into MBR:

sudo grub-install "(hd0)"

2.Download themes:

wget http://grub4dos.sourceforge.net/themes.tar.bz2

Extract it to /boot/grub/themes:

sudo tar -xjf themes.tar.bz2 -C /boot/grub/themes/

Then,edit /etc/default/grub:

sudo gedit /etc/default/grub

delete the “#”(without quotes) before this:

GRUB_TERMINAL=console

3.Now,edit /etc/grub.d/40_custom:

sudo gedit /etc/grub.d/40_custom

copy and paste following into this file:
set gfxmode="640x480"
set gfxfont="Unifont Regular 16"
loadfont /boot/grub/themes/fonts/unifont.pf2
loadfont /boot/grub/themes/fonts/aqui.pf2
loadfont /boot/grub/themes/fonts/edges.pf2
loadfont /boot/grub/themes/fonts/lime.pf2
loadfont /boot/grub/themes/fonts/7x13B.pf2
loadfont /boot/grub/themes/fonts/smoothansi.pf2
loadfont /boot/grub/themes/fonts/Helvetica-Bold-14.pf2
insmod vbe
insmod png
insmod coreui
load_config /boot/grub/themes/proto/theme.txt

the last line will load the theme.You can change this line to :
ubuntu theme:
load_config /boot/grub/themes/ubuntu/theme.txt
winter theme:
load_config /boot/grub/themes/winter/theme.txt
proto theme:
load_config /boot/grub/themes/proto/theme.txt
Now,use this command to create grub.cfg file:

sudo update-grub

grub2_theme

ubuntu

grub2_theme_1

proto

grub2_theme_2

winter

For more Burg details see:https://help.ubuntu.com/community/Burg/