I'm of the opinion that these anti-glare areas are black. Like one poster stated, even if the black was mixed with some ultramarine blue, the result is very close to RAF "Night Black." Which is, without a doubt, black. I cant say with any degree of certainty what the reaction of the paint is to extensive exposure to sun, heat, and humidity is, but as far as I'm concerned, any color on artwork that is not very close to pure black is incorrect - and will be made black should I skin that particular scheme.