Aerolite is an Xfwm4 theme whose aim is to reproduce the latest and greatest (hah) from Redmond on your Xfce4 desktop. It was made using pieces of KDE Crystal and the Murrine Xfwm4 theme. The buttons show their colors when clicked, but are grey otherwise so as not to distract the user much.

An aerolite is a fallen meteoric rock, and also a pun on "Aero Lite" (but you knew that part already).