colordiff is just a perl script to colorize diff's output. Patching it to add support for the kind of coloring I want to do here would be a lot of work. As fo

colordiff is just a perl script to colorize diff's output. Patching it to add support for the kind of coloring I want to do here would be a lot of work. As for using emacs, there are many cases when I want a stand-alone diff tool.