--- /usr/bin/colordiff	2017-06-02 19:55:26.000000000 +0000
+++ colordiff-git	2017-08-13 18:30:44.869405793 +0000
@@ -66,6 +66,7 @@
 my $etcdir = '/etc';
 my ($setting, $value);
 my @config_files = ("$etcdir/colordiffrc");
+push (@config_files, "/usr/share/apt-listdifferences/colordiffrc");
 if (defined $ENV{XDG_CONFIG_HOME} && $ENV{XDG_CONFIG_HOME} ne '') {
     push (@config_files, "$ENV{XDG_CONFIG_HOME}/colordiff/colordiffrc")
 }