Your best bet Is lesser/butter x lesser/butter BEL as far as lucys go, most I have seen are pure white ones, few times resently people have posted some that get some yellow but it seems to be pretty rare.
lesser/butter x mojo I have seen quite a few yellow out and a couple with dirty heads, though I have seen some nice white ones also.
OP I would look into lesser/pieds. They have a chance to get pattern, but a lot of them don't. They have normal eyes though.