Great skin, suggestion on the region: use the black region for the blue color and add a small amount of blueish metallic to it it always gives carpaint that extra feel. You can use one of the other regions for the black color to give it carbon etc style. Normally I use blackregion for carpaint/metallic, greenregion for chrome (here toyota logo), blue and white for other parts which should be different and red region for logos, shiny vinyl.
