Hi rene,
Thanks for reporting this bug and any supporting documentation.I test your
report on my PC and I agree, you can't change the background of the side bar.
Since this bug has enough information provided for a developer to begin work,
I'm going to mark it as confirmed and let them handle
Thank you for helping with making Ubuntu and its file manager Nautilus
better by reporting this bug. I've opened a bug report in the GNOME
Bugzilla bug tracker, so the developers are notified. Therefore this bug
can be marked as 'Triaged'.
** Bug watch added: GNOME Bug Tracker #610747
** Attachment added: Dependencies.txt
http://launchpadlibrarian.net/39470481/Dependencies.txt
** Attachment added: XsessionErrors.txt
http://launchpadlibrarian.net/39470483/XsessionErrors.txt
** Attachment added: usr_lib_nautilus.txt