I'm guessing your car is white, if so call Nissan and give them your vin# then they will be able to tell you your paint code. Then go to this website or call them
Touch Up Paint and Accessories | AutomotiveTouchup
Then give them your paint code.. They are able to mix up any color spray paint you want. I color matched my Red to my car when I did my head lights.. Color match was spot on! Good luck!