All Giulias have a backup color camera. As for the mirror, do you mean "electrochromic"? Also standard equipment. Auto-dimming exterior mirrors are available as part of the Driver Assistance Static Package ($650).
But maybe I just don't understand what you are asking.
I doubt it could be done easily, if at all. But I'm not an expert. In my opinion it would be much better to find a car that comes with those options. There are third-party auto-dimming mirrors and back-up cameras, but they will never be as good as what is installed by the factory.
There are some service techs in the forum, maybe they will comment.