Coloring/genetics question

Hello everyone! Google can't seem to give me a straight answer so I will ask here. I have a few chicks that are now 2 weeks old and have started really getting their feathers in. Is it possible for these chicks to entirely lose the pattern on their feathers and be buff? Or will they always have some sort of penciling. First pic is a chick in question, 2nd is Mom, and 3rd is dad. They are bantam cochins