Help with Paint Color

Does anyone know what type of blue paint was used on this truck? The blue will shift to a goldish color under the sunlight.

http://www.gaugemagazine.com/2006/September/ITB2006/pages/GaugeMagazine_ITB2006_378.htm

http://www.gaugemagazine.com/2006/September/ITB2006/pages/GaugeMagazine_ITB2006_477.htm

Let me know if anyone has any idea