If you’ve ever noticed the Keller water tower glowing blue, you may not know there’s a story behind it — and it starts with Don Blevins. Don grew up in Keller and graduated from Keller High School, where he quarterbacked the football team to the 1957 regional championship. He went on to earn an engineering degree from the University of Texas, which he later used to help design Keller’s early rural water system. But most locals remember him from Friday nights. Don helped design the original game