This is John Moon's blue-gray CREB. He sent it to me see what my opinion about the color is. The title says it all! Gray CREB145's are known to exist in a silvery gray; and they also are known with tints of green, purple, and blue. Blue gray's and the name "John M." seem to go together though as the only two of these pieces I have seen (so far) both belong to someone with that fist name and last initial.