"High brown, dark brown, yeller gals, O!"

In The Black Bottom, (1926, by Henderson de Sylva & Brown you will find:

Every high brown girl and her buddy
Go down where the flats are muddy
To do a dance that soon will be renowned

and also

Old fellers with lumbago
And high yellers away they go
They jump right in and give it all that they've got

and there is also a song called At the high brown babies' ball