Tint the Outside.
Micra lights are bonded in,rather than break the seal for such a simple job you can mask around the lights & tint in place.
Borrow a hairdryer & warm the lights before painting,it helps paint go off quicker,avoiding runs.When I use aerosols I warm them in hot water or with hot air gun,it gets the paint flowing better.
We used to mix some black basecoat with laquer & apply with a gun to get the same effect...
Oh and sorry to bang on but the law apparently sayes you may tint rear lights but it's naughty to tint the reflector part.Most plod would not notice but bet your life the hawk eyed moustached traffic division officer would...