Samia, the bag you have pictured is the midnight/pewter combination.
The midnight is black. Rebecca uses different names for her blacks each season, and the black leather has very little variation in them season to season.
The night is also a dark black leather, very soft, and has a slight sheen to it. I love it!
Noir is the black that will be in the prefall line, which i presume is going to be a super dark rich black.
But all of the RM black bags i've come across thus far are very soft