How to change the gdm-greeter background in F14?

[Bruno Wolff III]

On Fri, Sep 24, 2010 at 16:05:49 +0200,
  Joachim Backes <joachim.backes at rhrk.uni-kl.de> wrote:
> On 09/24/2010 03:43 PM, Bruno Wolff III wrote:
> > On Fri, Sep 24, 2010 at 10:42:51 +0200,
> >   Joachim Backes <joachim.backes at rhrk.uni-kl.de> wrote:
> >> Hi,
> >>
> >> in F13, I can change the gdm-greeter background by klicking with right
> >> mouse button in my desktop, saying "Change dektop background", select
> >> some  background picture and press "make default", so that picture was
> >> taken for the gdm-greeter too.
> >>
> >> I miss that feature in F14 - how to achieve this in F14? Can I do this
> >> by gconf-editor?
> > 
> > On a machine I updated to F14, gdm still has the previously set background.
> > So the feature still works if you can get it set up.
> 
> Sorry, but I made a fresh F14 install, not an update from F13 to F14.

Understood that. The point I was trying to make is that it still is possible
to have custom backgrounds. That answered part of your question.
I am not sure how you can change the setting, but it is still there.