This guide will show you how to install and use the Oxygen-transparent theme for KDE 4.10 in Kubuntu 12.10. What Is Oxygen-transparent? Oxygen-transparent is a spin on the default Oxygen theme for KDE 4 the makes the widget background transparent and blurred, not entirely unlike the effect provided by Aero in Windows 7. Oxygen is already an attractive theme that???s nice to look at, but this piece of software simply takes it to the next level.