CEDARKNOB~
Here is what one of the members from the Cornish group replied to me about your "painted" bird.
"""I think it is caused by leaky dominant white. The chicks have these spots as day
olds and they remain for life as you suggested. The gene now has common name and
these spotted chicks are called Paint. The gene has been identified in Silkies,
La Fleche, Phoenix, Cochins, White Sumatras, Leghorns, and possibly Cornish? The
Silkies with this gene have already been shown in several locations under this
new name.
You can literally select the chicks over many generations and continue to pick
out the ones with the most black spotting and you will eventually end up with a
bird that has a white base and large blobs of black throughout. Sometimes the
white is tinged with a fawn cast because Dun is starting to creep through the
white. Dun and Smoky are the alleles of Dominmant White.
To eliminate the spotting select against it and if you like it select for it.""""