package gnome-accessibility-themes-extras (not installed) failed to install/upgrade: trying to overwrite '/usr/share/themes/LowContrast/index.theme', which is also in package gnome-accessibility-themes 3.1.91-0ubuntu1

[Rocksinboxes]

I was trying to install gnome-accessibility-themes-extras from synaptic

ProblemType: Package
DistroRelease: Ubuntu 11.10
Package: gnome-accessibility-themes-extras (not installed)
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 1.23-0ubuntu1
Architecture: amd64
Date: Wed Sep 14 12:53:47 2011
DpkgTerminalLog:
 Unpacking gnome-accessibility-themes-extras (from .../gnome-accessibility-themes-extras_2.32.1-0ubuntu1_all.deb) ...
 dpkg: error processing /var/cache/apt/archives/gnome-accessibility-themes-extras_2.32.1-0ubuntu1_all.deb (--unpack):
  trying to overwrite '/usr/share/themes/LowContrast/index.theme', which is also in package gnome-accessibility-themes 3.1.91-0ubuntu1
DuplicateSignature:
 Unpacking gnome-accessibility-themes-extras (from .../gnome-accessibility-themes-extras_2.32.1-0ubuntu1_all.deb) ...
 dpkg: error processing /var/cache/apt/archives/gnome-accessibility-themes-extras_2.32.1-0ubuntu1_all.deb (--unpack):
  trying to overwrite '/usr/share/themes/LowContrast/index.theme', which is also in package gnome-accessibility-themes 3.1.91-0ubuntu1
ErrorMessage: trying to overwrite '/usr/share/themes/LowContrast/index.theme', which is also in package gnome-accessibility-themes 3.1.91-0ubuntu1
SourcePackage: gnome-themes
Title: package gnome-accessibility-themes-extras (not installed) failed to install/upgrade: trying to overwrite '/usr/share/themes/LowContrast/index.theme', which is also in package gnome-accessibility-themes 3.1.91-0ubuntu1
UpgradeStatus: No upgrade log present (probably fresh install)