“Swirl,” the light sculpture by California artist Jim Campbell in Cowles Commons, the public space between the Des Moines Civic Center and Capitol Square, will look different for the next few days. Through Saturday, “Swirl” lights will be blue in honor of Des Moines hosting two rounds of the NCAA Men’s Basketball Tournament. The change is part of the community’s “Paint the Town Blue” initiative, honoring local sponsor Drake University, even though the Bulldogs are playing their first-round game in Albany, N.Y., on Friday. Campbell’s “Swirl” is 28 feet tall, 94 feet wide and uses more than 8,000 LED lights to create moving images. The current image is an abstract view of the Des Moines River.