Nail salons are big business here. The runny joke is that each shopping center built here comes with a nail salon. I don't like having pedicures because I feel uncomfortable having someone on the floor working on my feet. But when I do, usually when my feet truly require a de-callousing, I get a color that is closest to my skin color for toe and finger nails. I always consider other colors but choose that color every single time, to my daughter's chagrin.
BTW, Distracted, your daughter is not alone. My sixteen year old loves to paint her toe and finger nails alternating colors. Unfortunately, I've seen up to five colors on the girl at once.

Black, electric pink, silver, red, and blue. I had to put my foot down at sharpies (she wanted more colors).