Green’s Dictionary of Slang

beige n.

[SE beige, yellowish-grey]

[1940s+] (US black) a light-skinned black person.

In compounds

beige frame (n.) [frame n.1 (1)]

[1950s] (US black) ‘smooth brown skinned girls, girls with heavy tan’ (Durst, The Jives of Dr Hepcat, 1953).