erm... rattlecan lol
Haven't looked into the final proper paint job yet, this is just temporary as half the car is going to be bare metal after welding, body work, removing the vinyl roof etc. so needs to be protected.
[EDIT] ok, this is weird -- I just typed 'Nissan Polar White' into google and it comes up as 216 and 531, so maybe I have by accident found the right shade. Also, it's not as white white as it seems; comparing it to all the other shades of white in a paint chart it's definitely more of an off-white.