[Bug 462531] New: text of highlighted button in dialog goes black

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Summary: text of highlighted button in dialog goes black

https://bugzilla.redhat.com/show_bug.cgi?id=462531

           Summary: text of highlighted button in dialog goes black
           Product: Fedora
           Version: rawhide
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: medium
          Priority: medium
         Component: pango
        AssignedTo: besfahbo(a)redhat.com
        ReportedBy: jspaar(a)users.sourceforge.net
         QAContact: extras-qa(a)fedoraproject.org
                CC: fedora-fonts-bugs-list(a)redhat.com
   Estimated Hours: 0.0
    Classification: Fedora


Description of problem:
On XO running fedora rawhide livecd,
The highlighted button in a dialog (any app) looks black while the dialog
window is in focus.

Version-Release number of selected component (if applicable):
I'm not sure which underlying component is responsible.  Here are candidates
chosen from zenity's dependencies:

cairo-1.7.4-1.fc10.i386
fontconfig-2.6.0-2.fc10.i386
freetype-2.3.7-1.fc10.i386
gtk2-2.14.0-4.fc10.i386
glib2-2.18.0-1.fc10.i386
libglade2-2.6.3-1.fc10.i386
glib2-2.18.0-1.fc10.i386
libgnomecanvas-2.20.1.1-2.fc9.i386
glib2-2.18.0-1.fc10.i386
gtk2-2.14.0-4.fc10.i386
pango-1.21.6-1.fc10.i386


How reproducible: always


Steps to Reproduce:
1. Boot fedora rawhide livecd on XO per
http://katzj.livejournal.com/438184.html
2. Log in to gdm and open any dialog, such as System->shutdown
3.  or run: zenity --question --text 'do you like pirate buttons?'
--ok-label='Aaargh!' --cancel-label='Naargh!' 
3. 

Actual results:
While the dialog window is in focus, the *text* in the highlighted button
appears blacked out.  Tabbing to a different button will move the effect to
that button.  Focussing on a different window will remove the effect until the
dialog is in focus again.  Notice that in buttons with an icon and text, the
icon is not blacked out, only the text.

Expected results:
visible text on highlighted button while dialog window is active

Additional info:
Screenshot attached.

Intended to block FedoraOnXO Tracker:
https://bugzilla.redhat.com/show_bug.cgi?id=FedoraOnXO

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