I did my -06 3 door pillars with black, easy to do with little bit patience.
It made big difference i to Micras apperance, now mine looks 2 door "coupe"!
Depanding your taste and budget, changing rear K12 "Micra"-badge to K11 badge, older one looks much better IMO. I'II install mine when I will found it, lost in the garage...Thats sounds like a better idea . Any more cheap mods you know Mika.