[Osiris]

Source: Customize your Ubuntu GNOME theme

If you are using the standard, out of the box, Ubuntu theme with GNOME you might be interested in customizing this look. But for many users just now coming over from Windows it might not be all that obvious how to really get into the fray with customizing your desktop. Most people assume only the basics can be customized, such as basic theme and color. Fortunately much more can be configured.
From within the GNOME Appearance Preferences window most all customizations can be taken care of. Everything from theme, controls, window borders, pointer, and special effects can be configured here. So let’s dig into this and find out just how these customizations are handled.