The Washington Post reports:
The California legislature is considering regulating the color of cars and reflectivity of paint to reduce the energy requirements to cool them. A presentation on the proposed legislation by the California Air Resources Board is below.The authoritarian personalities of our times: California's green movement.
The problem isn't the color per se, but the reflectivity of the paint overall. And dark colors just don't reflect well, so they are likely out. "Jet black remains an issue," says the report.