We had some of our pink and our white double faced satin ribbon turn a yellow color after being placed on some of our dresses. It's not where we used hot glue, and the dresses have been stored inside where there are no windows. Has anyone ever experienced this? It's not yellow on the wheel it came on, but after a couple of weeks on our dresses it starts to turn. Do I need to ask the company I purchased it from? I hate to blame them if it's not their fault, but we can't now we're disassembling our work to correct the mistake.