chromatic is the pen name of a writer and free software programmer who resides in Hillsboro, Oregon, United States. He is the author of Extreme Programming Pocket Guide, a co-author of Perl Testing: A Developer's Notebook, the lead author of Perl Hacks, and an uncredited contributor to The Art of Agile Development. He is a contributor to CPAN, Perl 5, Perl 6, and Parrot.
In 2009, he founded Modern Perl Books, in part to revitalize the world of Perl and to publish materials that other publishers had neglected.
chromatic is the Perl 6 project secretary. He is one of the biggest proponents of "roles" in Perl 6 (what other programming languages refer to as "traits").