hi coey
you may find it hard to get hold of a kit of pure white youngsters but if you get a cock and hen that are pure white you MAY get a pair of pure whites off them but it is not gaurenteed
on many occasions i have bred a white youngster and the nestmate as been a dark one
thats how i have found it with my busschaerts
i once bred 2 white youngsters off a pair of blue pied rapido busschaerts
both were 1st prizewinners one topping the fed