It sounds like a manufacture defect. I would push the warranty with the dealer. It should be covered. That probably does mean to repaint though.
I work for a Honda dealership in Chicago, Honda of Lisle. We also have a pre-owned lot, The Used Car Superstore of Lisle. If you have any other questions you can reach me at www.hondaoflisle.com or www.theusedcarsuperstore.com You can call me at the dealership at 630-852-7200. Thanks, Lee S.