Hi every one
When you say "Paint with pink" do you mean pink-coloured white chocolate/candy melts? Or pink food colouring?
If its the former, when you add the white chocolate, make sure its NOT too hot. White chocolate will remain workable for quite a long time. Spoon it in directly and carefully onto the set pink areas, then add the rest of the white. Tap gently to remove bubbles.
I haven't painted moulds before in anything other than melted coloured chocolate, so I can't offer any words of advice if you're using a food colouring medium other than choc.
If you're painting the pink FIRST and it's pink that is causing the problem, you must be smearing the pink somehow. Once it's hardened, it's not going to move anywhere.
Have you tried cocoa butter colours? Those are neat.