Black is often associated with darkness, mystery, and the unknown. It can also represent death, mourning, and the supernatural. In the context of Halloween, black may symbolize the darkness of the season and the spookiness of ghosts and other supernatural beings.
Orange is associated with autumn, harvest, and the changing colors of the leaves. It can also represent warmth, joy, and energy.
In the context of Halloween, orange may symbolize the fall season and the celebration of harvest festivals. It is also often associated with pumpkins, which are a traditional Halloween decoration and are used to make jack-o-lanterns.