What do the Halloween colors of orange and black signify?

Answer:
Orange has always been a common fall color since in fall many trees' leaves change color to yellow, orange and brown.

Black represents the macabre aspects of Halloween with its references to witchcraft, death and the undead.
First answer by Chewd. Last edit by Chewd. Contributor trust: 243 [recommend contributor recommended]. Question popularity: 3 [recommend question].