Text difficult to read when comparing configuration files versions

[jorge cob]

When a configuration file is updated, a window is shown where you can view the changes between the current and new version.

Removals of text are shown in grey color with red background, this is difficult to read, a different color choice would help to make easier the review of config. files changes. My suggestion would be red background against white text.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.10
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.0.1-0ubuntu1
Architecture: amd64
Date: Wed Apr 11 21:55:56 2012
ExecutablePath: /usr/bin/update-manager
GsettingsChanges:
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1334199336
 com.ubuntu.update-manager show-details true
 com.ubuntu.update-manager window-height 598
 com.ubuntu.update-manager window-width 600
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANGUAGE=es_MX:es
 LANG=es_MX.UTF-8
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)