Thank you for your review. We're sorry that it was not clear that the color does not always hide the design on these mugs. We would suggest trying the 11oz Color Change Mugs with Spoon as they have a more opaque black coating. (https://www.jpplus.com/11oz-color-change-mug-w-spoon-36-case) Our customer service department will reach out to you shortly to see what we can do to help you out!