Streetlight Bulb Color Gradients as Neighborhood Identity Markers in São Paulo’s Periphery

圣保罗市郊街灯灯泡色阶：社区身份标识系统

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Across São Paulo’s Zona Leste, streetlight bulbs shift chromatically—from warm amber in Vila Prudente to cool blue-white in Sapopemba—mapping informal territorial boundaries more precisely than census zones.
These gradients emerged organically after 2005 municipal LED rollouts, as residents selected bulbs reflecting local aesthetic preferences and collective memory of pre-electrification gaslight hues.

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