Comment 0 for bug 1194137

Test case:
Open Appearances panel
Set a custom solid color background with gradient
Click on the pcolor <> scolor switcher icon
background goes black

Check in dconf-editor > org.gnome.desktop.background, primary & secondary colors will again be in rgb

related 'fix-released bug
Bug 1173818

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: gnome-control-center-unity 1.3daily13.06.14.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.9.0-6.14-generic 3.9.6
Uname: Linux 3.9.0-6-generic x86_64
ApportVersion: 2.10.2-0ubuntu2
Architecture: amd64
Date: Mon Jun 24 09:55:33 2013
InstallationDate: Installed on 2013-06-23 (1 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130621)
MarkForUpload: True
SourcePackage: gnome-control-center-unity
UpgradeStatus: No upgrade log present (probably fresh install)