You might as well include white and black in that line up since technically everything from white to black covers the entire "colorless" palette. So, assuming this new gunmetal replaces the dark cherry, that means you'll have 7 choices for exterior: 1 is red, 1 is blue, and the other 5 are some combination of white and black with sparkles.
Granted the Maxima has 5 white/black shades but at least it has 4 other colors to choose from. Come on Nissan, give the Z enthusiasts something to be happy about.