McLaren orange color?

Here some mixes that have proved to be right in the past (Tamiya paints)

Orange: X6 + X8 (50/50). Overall Colour on F1/500 and CanAm cars from 1968 to 71

Blue: X3. Sometimes on spoilers and wings on Orange livery

Mario Covalski
Editor Modeler Site
http://www.modelersite.com/

You're in luck as this discussion was up some time ago, just follow the link and you have mixing proportions for Tamiya's acrylics. Should be useable for other brands also if the hue match resonabely close.

/forums/342554/ShowPost.aspx

Niclas