Here we have Paph. Armeni White ( Paph armeniacum x Paph delenatii) Paph armeniacum is deep, saturated yellow. Paph. delenatii is pink. What happens is that the pink "washes out" the yellow, producing a white flower. BUT when it first opens, it's pale yellow. The pink pigment (from the delenatii parent) develops over several days after the flower opens, to produce the pure white flower implied in its name..