Vibrant background colors and name-zapped graphic create visually arresting poster. Story, photos by Sharon Kozden (event photography courtesy of Cirque du Soleil) Step right up! It’s showtime, folks. Over the summer, the circus came to town at the Greater Philadelphia Expo Center in Oaks, PA. The renowned Cirque du Soleil arrived with its Under the Big Top production of VOLTA, and Oaks was woke! For some time preceding Cirque’s descension at the Expo Center, the locals and passers could witness the construction progress of a large tent (one that seated 2,500). People were talking. Something grand-scale was in the offing. A big deal in little but mighty Oaks. Word of…