I'm not much of a two tone fan, so I can't remember with 100 % certainty, but I think it was a option when I ordered my fns 40c. I went full black with a safety as I have to unholster a lot with my job.
I'm pretty sure they asked me if I want to order it black or exposed stainless. You might call an FNH dealer to know for sure.
Regardless of the color, it's the best carry gun I have ever owned. Love mine.