Green’s Dictionary of Slang

1. brandy.

1870

Fetter Lane to Gravesend in Darkey Drama 5 25: Would you like to come to the buffet? [...] And treat me to some pale?

2. (US black) a white person.

1934		H. Sebastian ‘Negro Sl. in Lincoln University’ in AS IX:4 288: pale (also peck; pink). A white person. Sometimes used in lieu of the more general Negro term for whites, o’fay or fey.
1989		H. Rawson Dict. of Invective (1991) 415: Other colorful terms that blacks have used for whites include bright skin, chalk, gray, milk, pale, paleface.