go to a shop that sells models (toy war planes, tanks, cars etc etc) and they will have all the small tiny tins of coloured paints designed to paint plastic etc.

you could do it by airbrush kit etc, but it might cost you apx $120 for a airbrush kit, plus paints. The small tins of paint plus the small brushs etc from the modelling shop would be a effective n easy way to make it like new with a new custom paint job.hope it helps.