xperia Z first stock wallpaper with black bottom
the gray/white bottom make really bad illusion that almost of people at first look realize the screen is completely white and etc.
this wallpaper with black menu/notification bar in development forum can help u to have more deep black experience on xperia z
./Android & Ubuntu Programming...
SonyXperiaZ; C6602 /10.3.1.A.2.67
SamsungGalaxyNoteIII; N900 /XXUBMJ1
Grouper /CM11kxk-kernel /CM10.2 | RootOdexJWR66V | UbuntuTouch | UbuntuDesktop | BT5 & PACman (In Use)