Replace GRUB With BURG to Beautify Boot Menu, Install in Ubuntu via PPA

Burg is boot loader forked of GRUB loader. It uses a new object format which allows it to be built in a wider range of OS, including Linux/Windows/OSX/Solaris/FreeBSD, etc. It also has a highly configurable menu system which works in both text and graphic mode. Additional features like stream support and multiple input/output device are also planned for BURG. BURG features superior theming and has a highly configurable menu system which works at boot time in both text and graphical mode. Since BURG is derived from GRUB, its configuration is similar in most respects. The main configuration file is/boot/burg/burg.cfg and is usually generated automatically. You can create one by yourself or use grub-customizer to modify BRUG entries and other stuff. You can even design theme for BURG checkout this link for more details about BURG.

All below images are from Noobslab

Available for Ubuntu 14.04/14.10/12.04/Linux Mint 17/13
To install Burg with Themes in Ubuntu Terminal (Press Ctrl+Alt+T) and copy the following commands in the terminal:
Open Terminal

1)sudo add-apt-repository ppa:n-muench/burg

2)sudo apt-get update

3)sudo apt-get install burg burg-themes

After this install Grub-Customizer and when you open grub-customizer and if you face problem like "grub-mkconfig couldn't be executed successfully. You must run this as root!"" then 

do this

sudo mkdir /boot/burg/locale

After installation you can run burg-emu to choose theme and change resolution (You also can do it while you are in actual BURG). To change themes use F2 and to change resolution use F3

To revert back to GRUB enter following commands:
1)sudo apt-get remove --purge burg burg-themes

2)sudo add-apt-repository -r ppa:n-muench/burg

3)sudo update-grub

Please do it on your own risk