Trevi recently completed his nineteenth, wherein:
At night when you’re out driving, you can tell which neighborhood you’re in by the light of the streetlamps, because each ward basks in its own different hue. For instance, if the streets are all aglow in azurite, you’re definitely joy riding around Marquette Park.
Zoning codes require that windows are tinted according to the neighborhood’s chromatic identity, so no matter how the interiors are lighted, houses, skyscrapers and 7-Elevens do not give off wayward wavelengths.
Even your car lights beam out the same color. But when you cross over into another ward, they instantaneously switch filter to match that ward’s assigned spectrum.