Different Backgrounds for the Lock Screen vs the desktop

[Ryan Lerch]

The new GNOME shipped with fedora 20 has the awesome new ability to set 
different backgrounds for both the lock screen/shield and the normal 
regular desktop background.

Currently in f20 alpha TC4, we set the old f19 default background for 
the desktop, and a completely different pink, fan style design for the 
lock screen. IMHO, the defaults should behave the same as the f19, 
setting the default background for both.

thoughts?

cheers,
ryanlerch