Package: rubygem-term-ansicolor

"rubygem-term-ansicolor" package binaries on CentOS:

/usr/lib/ruby/gems/1.8/gems/term-ansicolor-1.0.7/bin/cdiff /usr/lib/ruby/gems/1.8/gems/term-ansicolor-1.0.7/bin/decolor

You may install this package on CentOS with yum install rubygem-term-ansicolor