"why's (poignant) guide to Ruby: in color" is a trade paperback textbook on programming languages, specifically focusing on Ruby. Published by CreateSpace in 2015, it is authored by Why the Lucky Stiff and contains 186 pages of insightful content. The book covers the subject area of computers and is a valuable resource for those looking to deepen their understanding of Ruby programming. With a compact size of 10 x 7 inches and weighing 15.1 ounces, this informative guide is a must-have for readers interested in programming languages.