UPDATE

Well over the last few days I have been painting my plastics gloss black.
Fitted them this morning and took a few pics so here they are.











The finish isn't perfect but you cant notice anything unless you're right on top of them. Not bad for €60 worth of paint from Halfords (3 gloss black, 2 primer). Oh and €3 for some 1000 grade sandpaper. Better than paying €350-€500, which was the going price to get them done professionally here in Holland.

I'm curious how long it will last with the bad weather coming up but I'm super pleased with the result and have no problem doing it again if it needs to be done.

Next things to come...
set of winter tyres in about a month's time...
rear windows tinted...
gloss black alloys next summer...