The idea is delicious, but a quantum computer would still need a detailed model of the paint’s reflectance and the street‑light spectrum, plus a way to encode the city’s vibe as a quantum state. In theory you could superpose all possible color shifts and collapse the wavefunction when the lights flicker, but practically the sheer number of variables would swamp the qubits. Still, imagining paint colors as quantum bits that “pop” when the environment changes is a neat thought experiment that might inspire new ways to encode dynamic lighting in AR or real‑time graphics.