The first two photos are from a type flower, with petals and sepals perfectly white and purple lip. Actually, it is still type, but the color of this lip is a bit different, tending to roxo-bispo. The other two photos show a nice variety roxo-violeta. Roxo-violeta is also known as var. aço, which is merely a regionalism (orchid collectors from Santa Catarina, Brazil, use to use this name).