by RichD » Fri Aug 25, 2017 6:14 am
Asphalt is only black when it is newly laid, that eventually fades to a gray, or in the case of very old material, nearly white in color. Because the asphalt is composed of tar and crushed stone it has a speckled appearance when viewed close up. The color of the stone will effect the color of the asphalt. Most people use a gray paint, however if you buy paint off the shelf it usually has a bluish tinge because a straight gray is not a decorator color. If you want a gray that does not have a blue tinge you will probably have to get it custom mixed. Another option is speckled paint, Krylon has a speckled paint that comes in spray cans and there used to be a brush on paint called River Rock.
Darker colors absorb heat and lighter colors reflect them, so a black track will get hotter if it is in direct sunlight. When your track is not in use it would probably be best to cover it, no matter what color it is painted.