I ordered 400 Sweet Spot Lunch Coolers for a recent teachers' tradeshow give away. We used the dark blue which was popular with the male attendees. We ordered a larger quantity of the light blue with blue and violet polka dots which were a big hit with the female attendees. Our logo looked great on both, although a black imprint on the dark blue cooler didn't have very much contrast. We did recieve a few coolers that had defective zippers (9 out of 400 were defective). Overall a great product.