This is rastapatch, a patch file colorizer. Highlights changed words (as good as it can guess) in unidiff patch files.
(c) Copyright 2012 by Neels Janosch Hofmeyr firstname.lastname@example.org, published under the General Public License v3, except for the part copied from termcolor.py, which is clearly marked with its own terms in the source.
Naming: I am not a Rasta in any way; the colors I chose to colorize the diffs, completely by random, ended up resembling "rasta colors", that's all.
The project home page is http://hofmeyr.de/rastapatch/
Source is available at https://github.com/neeels/rastapatch
svn diff | rastapatch - | less -R
TODO: rastapatch is not streamy yet, i.e. it reads the entire input before starting to print its output.