If you are not so happy with the Grub screen in text mode and would like to leave it more elegant, there is a way to do that with the software called Burg.
To install it, firstly, open a shell and type the command below to add the following repository:
sudo add-apt-repository ppa:bean123ch/burg
sudo apt-get update
Now, you have the repository updated, just miss install the Burg.
sudo apt-get install burg
A window called Configuring Burg-pc will be opened. Check if the path to the grub is correct and press enter. The next step press enter again to keep the Linux default command line. After that, the installation will be completed. However, to finish, you will be questioned to inform where the grub was installed. Specify the right place pressing the space bar (in my case is /dev/sda) and after press enter.
Reboot your computer. When the Burg appear, press F2 to change the theme.
That’s it folks. See you next time.