Fiat's Nero

This morning on Autoline Detroit, John McElroy's auto talk show, a Fiat lady stated that part of the Fiat 500's ordering experience will be calling colors by their Italian names. So red will be rose, and black will be nero. Cue the Rome burns jokes. But what I don't get is, why not call it Cinquecento then? For mist people, if you say "five hundred", they will think of a very bland large sedan from Ford.

If you're going to go Italian, go all in, that's what I say.