There are 9 recognized colors in the French Standard: Cuckoo, Golden Cuckoo, Black, Birchen, Black Copper, Wheaten, Black-tailed Buff, White and Columbian.
The Blue Wheaten variety is not yet recognized in the Standard. We are working on genetics with the breed - as there is a problem producing Blue Wheaten roosters. We have two Blue Wheaten boys at the moment:)
Here is one of my Blue Wheaten roosters and some Wheaten hens: