Colorful Nails by LostNlonelyGrl86 at Mod The Sims 4

Long and Short Nails, Solid and Multi colors. Available from Toddler-Elder
Spa Day (SD)
Coffin, Stiletto with Jewels, Community a.k.a Ebonix, in solid colors. Available from Teen-Elder
All Nails are of course available for both genders,
and randomizing is also disabled so no random townies will be sporting these.