All The Times Princess Diana Played By Her Own Rules
No to neutral nails
If you look at any female member of the royal family at public events, they are only really seen wearing neutral nail polish as to not draw attention and not be flashy. Princess Diana played by her own rules for this one too as she liked to experiment with color.
In fact, she regularly got manicures with bright red polish to give her black dresses a pop of color. Someone that decided to follow in her footsteps was Meghan Markle who has often been seen with nail colors including dark reds, purples or blacks at official royal events.