Any highly contrasting colors wil work OK. I like yellow and dark blue. Since the bottom is often in shadow, you may as well put the darker color on the bottom. Try dark blue on the bottom with a wide (at least 6") yellow stripe, and then on the top do the reverse; yellow with a blue stripe. Or dark red and white. Or black and orange. Seems to me that checkerboards seem to blur together unless they're really big checks. [sm=RAINFRO.gif]