I recently installed new version of linux (Ubuntu Intrepid ibex) on my secondary computer and i wanted to customize it like i am used to customize windows. I tried a lot of gnome themes and found many beautiful and elegant looking themes which enhance your desktop with different colors, corners, buttons and scroll bar styles.
I filtered some of the best looking gnome themes to share on TechieSouls. After downloading themes you have to install them, the following screenshot will guide you how to install theme in ubuntu and gnome interface. Install apply and enjoy
Ubuntu Themes: 50 Best Looking Linux Gnome Themes to Download | TechieSouls