Blue patterned Red (Incomplete) Colombian

[Mr D]

I was looking into crossing a Blue Cuckoo Marans with a RIR, then crossing the rooster Barred male offspring back to a RIR. The calculator says I'd get a Blue patterned Red (Incomplete) Colombian. What do these look like?

 

[Amer]

Like a hatchery RIR but with blue where the black should be.