[Perfectlap]

if we are talking a top shelf repaint to a different color that's one thing. But such a paint job is extremely expensive, you're NOT going to get your money back.
Anything less than a top shelf work and its going to be obvious and you will attract less buyers...unless you lower the price or are prepared to wait for the right price to come along. Not something you want to do with a depreciating assett.
Personally speaking if I'm shopping for a Carrera or Boxster and open the trunks and door jambs and see even the slightest indication that the car was previously a different color, I'm walking away or offering less then what I intended to offer.