When was the first turquoise car manufactured?

Turquoise is a color and not a model of a car, usually special types of paint are needed to render this color accurately, something not ordinarily done on an assembly line protocol! Custom Cars with Turquoise paint jobs certainly existed as far back as the Thirties. The color was virtually the ( color of arm of service) for the ATSF railroad and maybe some ATSF executives had this color on their personal ( automobile, not RR) cars. Fine for custom cars!