I need a recommendation for a good local bakery that can make a simple "custom" cake. Literally, I want a round chocolate cake with white frosting that has a rainbow pattern painted on it. It is a super simple design. I need to feed potentially 15, 3-year-olds and 15 adults. I am on a budget so a local place (maybe not necessarily the place that expats would get their cakes done at) would probably be best. Any suggestions?