Chick down indicates recessive white.
https://www.backyardchickens.com/attachments/20221229_100113-jpg.3408855/After hatching several thousand chicks including the color varieties of dominant and recessive white, do you think we would have an "eye" for chick down when it's very important to the breeding program?
Perhaps, but…
This is hen that had the gold feather.
She isn’t really a red pyle, more of a salmon breasted white.
As in Leghorns
https://pdf.sciencedirectassets.com...313505d01075c5a5201&rr=79ba341abcdf22fa&cc=us
I don’t think anyone knows what causes the red breasts in an extended black based bird, but they are definitely dominant white.