This icon set for ubuntu is awsome.
To uss this icon set we first need to add the PPA. Execute  this in a terminal.
sudo add-apt-repository ppa:tiheum/equinox
 Then this
sudo apt-get update && sudo apt-get install faenza-icon-theme

Now you can activate it via menu >System
                                                   >Preferences
                                                   >Appearance-customize tab 
                                                   >Icons

Select faenza and your done. Hope you like it as much as i do.