On behalf of MrsBish - she doesn't paint her toes (toenails)...never wears open-toe shoes and who wears polish while wearing sandals?
Fingernails - dark reds and purple-reds. Her nails break too often to try french manicures.
On occasion...she'll sit still long enough for me to paint designs on her nails and cover them with a few layers of "witchcraft" (a nail hardener).
The last designs were a series of Japanese charaters in white, on purple nails, a series of supernatural animals (dragons, unicorns etc..) in full colour, on dark blue, and a copy of some weird pieces of art found at a museum's web-site, on red.
My hobby's painting miniatures (about 1" tall)...so, nails are easy.
I've even done Camelyn's nails once...though the fact that she works in harsh chemicals means that the design didn't last long.
Call me odd if you will, but I like the challenge of working on a very small curved 'canvas'.