City Hall will be Blue tonight. A Light It Up Blue event is being held in Danbury to mark World Autism Month. The lighting ceremony will be a sensory friendly event with a lower sound level, a designated quiet area and ear muffs available--so that all families can attend the ceremony in their honor. The event is being organized by Emanuela Palmeras, whose son is on the Autism Spectrum. The ceremony is at 6:30pm.