Brownie

(A brownie costume for a boy or a group of boys that's more creepy than charming.)

This costume is of brown cloth with yellow bands, buttons and cap trimming.  Yellow stockings and brown pointed slippers.  Where a number of "Brownies" are to appear, the costume may be made of khaki, duck or like material, and may be of any combination of colors, bright hues being preferred.

Source:
Masquerades, Tableaux and Drills.  New York: The Butterick Publishing Company, 1906.