Photoshop help changing Camaro color

[spacepirate]

I purchased the House of Kolor program to play with the color of my Camaro before I paint. However, you can only pick from the selection of colors in the program.

Could someone please change the color of the attached car to the new McLaren "Chicane Gray"? I think it'd be a really cool color not yet seen on the 68's.

Thanks!!