Green’s Dictionary of Slang

(US) to injure, esp. to give a black eye.

1866		Wild Boys of London I 75/1: ‘He has hornemented your hie,’ said the policeman, with the usual hemphatic harticulation for which the force is remarkable.
1919		C.H. Darling Jargon Book 10: Decorate – To give another a black eye or a cut face.
1952		(con. 1920s) ‘Harry Grey’ Hoods (1953) 88: Moishe certainly looked like he had gotten bounced around [...] ‘So who decorated you so fancy, your mother-in-law?’.
1956		J. Curtis Look Long Upon a Monkey 190: If, in the punch-up, the law decorated his face, it was jam to explain it away.