Dan Raybon, director of the Cultural Unity Center, will retire Aug. 31 after 26 years of service at the University of Colorado at Boulder, according to Ron Stump, vice chancellor for student affairs. Raybon and his spouse, Professor Patricia Raybon of CU-BoulderÂ’s School of Journalism and Mass Communication, will be working on their consulting venture, Christian Diversity Concepts, Inc., specializing in diversity education and training. Professor Raybon is taking a one-year leave of absence from the university.