Theme dev "Nmiltner" is pretty well known around these parts for his themes which are fully detailed and generally change the look and feel of your entire phone. His Theme "Midnight" for Theme Chooser is no exception. This theme works with Cm10.1, AOKP, and any Rom that includes Theme Chooser support! This theme is up to date with Android 4.2.1 so this will work with Jelly Bean as well as ICS. This theme is DarkBlue, Light Grey, with hints of Dark Grey throughout. This themes all of the important elements of the Rom such as Framework-res, System UI, app icons, pull down toggles, notifications, dialer, mms, sms, clock app, Gmail, and more!
Grab the theme for $1.49 on the Playstore