No this image was not computer generated. The rainbow was manually made with 5,000 Pantone color chips glued onto wood boards. The project focused on promoting Pantone color guide books to art college students and faculty, and to convince them that Pantone has the most color selection for their printing guidance. To grab their attention, they re-created a rainbow (8 meter in length and height of 4.5 meters) consisting of Pantone color chips in the middle of college’s park. Pretty rad.