Wow. That sounds incredible, becouse oranges appears during all the three films. Here you are some examples:



After that, Fredo is murdered



They try to Kill Vito, look at the oranges



Everybody knows what happend to Woltz's horse



Here we can see an orange in front of Sonny's Wife. Minutes after that, Sonny is with another woman.



Tessio is playing with an orange and he is murdered for being a traitor.

There are more examples. A lot. But you must know that oranges are a signal of fatality.