Maybe, I might try some black primer and buy another can.It would have had a black primer at the factory, maybe that's the difference?
If it's a solid colour the under coat won't Influence it once you have enough of the top coat on, spray a test card with the paint you have, make sure there is enough on it then take the card and some trim to the paint supplier so they can see the problemMaybe, I might try some black primer and buy another can.
which other forum/pics?