White spotting gene then? Whites from black. Do you get red (yellow) baised whites in chickens? Dilutes? You could maybe have other paint colours if so.
I need to look into the genetics behind the colours in birds. (quail for me mostly) There's usually some sort of overlap across different species, and some morphs only found in certain species. Sorry way off topic.
I found this link really helpful in explaining breeding paints if you're interested.
https://vjppoultry.com/tag/paint-si...VGMfv3vMhIgZSXv-fgvuOqypAWrE8uuqUOumB1SHJnUfU