Theme, icons, wallpapers, splash screen are few items you can customize in Ubuntu. Ubuntu gives you a full hand of tools on what and how to customize. Ubuntu comes with a very decent suits of themes, wallpapers, fonts that help you easily change how your Ubuntu looks.
Although, these might be uninteresting after a little while and probably it's time then to upgrade to a more attractive solution.
Interested in changing the appearance of Ubuntu? Here's what you can customize and make your Ubuntu looks amazing:
You have more? let us know