no matter what it looks like, if your daughter wants "Rachel Flatt Yellow", then she should have "Rachel Flatt Yellow". It may not look the best or it may look fabulous. Regardless, it's what your daughter wants. Now, maybe when she hits the senior ranks - you could work with a stylist to see what looks best, but now - just go with what makes your daughter happy! If she loves her dress, she'll feel great about herself and thus have more fun on the ice!
My daughter's favorite color used to be yellow. Her first competition dress was yellow. It looked absolutely horrifying on her but she loved it and had a great time competing in it. However the following year, I made the mistake of talking her out of a particular dress b/c it didn't look that good on her. She was miserable all season! I've definitely learned my lesson!