My brother's just (very recently) bought a white preface-lift one with a lazyboy bonnet amongst other random mods (golf mk4 headlights etc).. It doesnt look too bad with the standard micra lights in, but looks awful with mk4 golf lights imo, so if you do decide to do it, dont use golf lights!
Ill post a pic up with the standard grill in if we have one laying around, so you can see what itll look like with that in if you feel its necessary?
Ill try and ask a friend of my dads who works as an MOT tester aswell, see if he knows if its road legal or not so you know for sure!