I have to do a cake for a boy and girl for this saturday, the theme is Mickey and Minnie mouse. a 2 tiered caked, the top cake will be minnie and the bottom will be minnie. so the top tier will be red with black and white and the bottom tier will be purple white and black. dont you guys think it sounds tacky when it comes to the colors....what should i do, please help. Mind you, she had a $40 dollar budget for the cake and as favor I figured I'll do it for her.