I've got some waterbased paint in a rattle can for my car. It looks to be a good colour match, until I put clear on it. As soon as it's cleared it looks a good shade or three darker than the surrounding paint, whether I'm spraying it on from the can or dibbing in stone chips with a brush. Am I making some beginners error or have the paint factors mixed it wrong? I've had good results with stonechips in the past with pearl colours but this seems to be a complete PITA... FWIW the colour is Peugeot "Moonstone" or "Gris Iceland", which is a sort of bluey silver pearl...