Hi everyone! I have a few questions concerning color flow? 1st? How long does the mix last, i bought some a few years ago to practice for a class, i stored it in a cupboard is it still good? 2nd? if i put it on a cake frosted in pastry pride do need to put anything underneath to keep it from melting? and last question once i put on the color flow decos I can't put it in the fridge anymore right? is color flow worth the hassle or do i just do them in chocolate? thanks for any help you could give me.