I don't have my XBMC in front of me but I'm sure there is an option in either Info Panel (Choose Display Mode or Select Layout) or in Extra Panel at the bottom.
That's not it, unfortunately. I really love your layout and I can understand why you would post it, it's much
better than the default "multiplex".
If you look at the screenshots closely, you can see they are different viewtypes, maybe a theme?
Your bottom row containing your movies is not transparent like mine is. Your info panel also has
a different texture.
Could you take a look when you are at home and let me know. You have been a great help! Kudos