Eye Color. Eye color is based on the number and color of pigment granules (Melanin) in our eyes. These granules range in color from neutral to very dark brown. The darker the pigment, the darker the eyes. And fewer granules result in lighter eyes.
Pope Francis is the son of Regina Maria Sivori (Gogna), who was born in Argentina, of Italian descent, and of Mario Giuseppe Gergoglio Vasallo, who was born in Turin, Piedmont, Italy.
You can say that Pope Francis' heritage and ancestory is Italian. But he was born and raised in Latin America so that's what he is ... IMHO. ETA ... if someone comes to America from Mexico then they are Mexican.