It used to take hours or days to change the lights at city hall lights. Now it's done with a few clicks.

Reported by Jessica Placzek. Produced and edited by Olivia Allen-Price, Vinnee Tong, Paul Lancour and Julia McEvoy. Theme music by Pat Mesiti-Miller.

Ask us a question at BayCurious.org.

Follow Olivia Allen-Price on Twitter @oallenprice.

Who’s Behind the Colorful Lights at San Francisco City Hall?

Bay Curious is a show about your questions – and the adventures you find when you go looking for the answers. Join host Olivia Allen-Price to explore all aspects of the San Francisco Bay Area – from the debate over "Frisco", to the dinosaurs that once roamed California, to the causes of homelessness. Whether you lived here your whole life, or just arrived, Bay Curious will deepen your understanding of this place you call home.