balloon glow
n.— «The race features a “balloon glow” spectacular the evening before. The competing balloons set up before sunset, blowing their torches up into the expanded balloons just as night falls while still sitting on the ground. The result is a glowing rainbow of excitement that truly captivates the crowd.» —“Great Forest Park Balloon Race takes flight” by Leah Merriman in Webster University The Journal (St. Louis, Missouri) Sept. 20, 2007. (source: Double-Tongued Dictionary)