MagIcons is a small application to manipulate iconsets for GNOME (e.g. Ubuntu). It allow you to create your own iconschemes within seconds, you don’t have to edit every single icon only set some colors and see the result in real time. You can save your favourite colorschemes and share them in the web, Download and install new Iconsets and scheme them by yourself and more.
Useful Links : http://gnome-look.org/