Is this even legal???

The other day I looked down and noticed that my 7 year old daughter's toenails had black dirt under the edges. We were late to wherever we were going, and she was insisting on wearing sandals. I wasn't in the mood to listen to her whine, "Ahhhhh!! That hurts!!" as she usually does when I try to clean under her nails, so I sat her down and painted her toenails with bright fuchsia-colored polish, hoping that no one would notice the dirt under her "pedicure."