Yo Phil What is up?
To the original post, you are supposed to coat the new plating with some sort of oil, again this is what most of the platers will say.
Since alot of us like to play with paint, let me tell you about my lastest experiment with hood hinges.
After a coat of epoxy primer I sprayed a set with Dupli Color DARK cast coat ( Auto Zone ). They were OK but way to shinny, they set around for a few days and I thought this is not going to cut it.
I de pressurized about a 1/4 full can of the same paint and let the gas vent for awhile, I then put the paint in my Badger airbrush with a large tip, I added about a tablespood full of Dupont flattner to the paint and dusted on a couple coats of the brew. All I can say is , the best painted hinges I have ever saw

, There real flat.
The next time I do this I will have some darker paint made for the base, there still a little to light, but better than light cast blast.
OK go play !
Mike