gnome-control-center: UI Freeze Break Request

[Thomas Wood <thos gnome org>]

Hi,

This is a small visual change to the appearance of the display previews in 
the display settings panel.

https://bugzilla.gnome.org/show_bug.cgi?id=706429

The main differences are that the preview now uses the current background 
image and the display number indiciator appearance is improved. Therefore, 
this change should only impact screenshots.

Regards,

Thomas