[Bug 27913] [Dapper] changing background colour doesn't take effect

[Manu Cornet]

Public bug report changed:
https://launchpad.net/malone/bugs/27913

Comment:
I believe this setting is only useful for plain gdm themes (not
graphical themes occupying the whole screen), and does not have any
effect on the graphical theme itself, if I understand correctly (you
might notice that the color that appears just before the greeter comes
on changes, though).

Sébastien, should we just close this bug, or try to hide this setting
when "graphical theme" is used ?