With out a pictures of the parent stock it will be hard to say exactly what the offspring would look even then with out knowing the heritage of all birds it would be hard to tell.
Also there are two types of "Brown" Leghorns, one being a Light Brown Leghorn and the other is a Dark Brown Leghorn. This could change the over all look of the offspring.
But if you indeed have a Crele rooster and is over a Barred Hen the offspring should be Barred roosters, Barred hens and Black hens.
Crele rooster over a Dark Brown or a Light Brown Leghorn is about the same the main difference in the offspring would be how dark the color and or marking will be and the main color difference would be seen mostly in the roosters .
Crele rooster over a Dark Brown or a Light Brown Leghorn would be Crele roosters, Black Breasted roosters, Crele hens and Black Breasted hens.