The Steamworks theme by theme dev "Alastrionia" is back and its better than ever. It has been tweaked to near perfection! The new 3.2 update is available for all versions of the Galaxy Nexus running the JBSourcery rom. You will nee to grab it from the themer tools section. Themed elements include Framework, SystemUI, Settings, Apollo, App widget picker, Email, Gmail (4.2 version), CalendarGoogle (totally overhauled), Browser, Bluetooth, Talk, Calculator, Contacts (new dialer, interface, cleaned up the look more), Phone, Desk Clock, Phonesky, LatinIMEGoogle, Gallery Google, MMS, Steamworks Wallpapers, and more!
As you can see this theme will give your phone a whole new look and feel. Tons of work and detail has gone into this theme. If you are running the JBSourcery Rom you will definitely want to give this a try!
Grab the theme here