In view of years of experience, I personally suggest that it is better to choose black in autumn for the following reasons:

1 A black skirt can be paired with dark or light stockings or dark undercoat, but a white skirt can't. Using dark socks will give people a feeling of depression.

A black skirt is easy to match shoes, and white shoes with light colors are better.

A white skirt is very attractive, and black or yellow skin will make the skin look darker.

White skirts are suitable for slim people, and overweight people will look fuller.