Vibrant yellow arches throw into relief the white, columned walls of Li-en Nail Salon #5 as clients cozy into two parallel rows of leather pedi thrones and mani stations and present their fingers and toes for glossy transformation. Inside the newly remodeled salon space, dedicated nail techs pamper hands and feet with manicure, pedicure, and artificial-nail services that include acrylics, fiberglass wraps, and silk tips capable of cajoling wayward moths into joining your moth-training circus act. For a natural approach, nails and toes can simply be shaped into place before nail techs sheath them in a coat of polish from such brands as OPI.