I created this OB theme specifically for my laptop, hence the small window bar. After discovering a darker variant of KDE's Oxygen theme, I decided to make it a default for my system, as the colour scheme is very suitable for laptops. Since I prefer to use LXDE more often than not, there was no OB theme to match this, so I designed this specifically to correspond with the GTK theme. I coded the gradient to try to match the GTK colouring as best as I could, while still trying to keep it clean and simple. I created the buttons with GIMP 2.8, to give it a sort of classic MAC OS-like feel to it. The second screenshot demonstrates the buttons with the mouse pointer over it.

* You will need the standard Oxygen GTK engine installed - the provided zip file contains the GTK2 & 3 files for this darker variant. I did not create the GTK themes - they appeared after I installed KDE on my system, and I can't seem to find this particular medium grey colour scheme online anywhere.

Install by extracting the .zip file to:

/usr/share/themes

The OB theme should thereafter appear in your OB theme changer. The GTK theme needs to be applied with whatever GTK theme changer your system uses.