You are probably looking for a factory correct mixture. In which case this might not be helpful but when resto'ing my '65 Satellite I found an acceptable rattle can product at NAPA, or maybe it was Advance Autoparts. There were a couple color choices. I picked gray/black/white. It had a decent build-up and looks adequate. - Art
The rattle can crap is usually a mix of oil/and water base paint to stay separated and achieve the look and will need to be cleared.
Zolatone is specically designed and does not need a clear, they do have a catalyst that hardens it further and makes it more durable.
I would choose a similar/maybe not "correct" color and still use the Zolatone brand paint because it is so durable and looks much nicer than rattle can.
I agree I used it my 64 Dodge and has held up well and looks factory. I know Moshers uses it in their restorations. I will see if they have something close.
Not the stuff I used, but maybe depends on the result you want.
This is an automotive paint product by Dupli-Color, called Splatter Paint Speckle Finish, "Restores Trunk Finish". The color I used was DM100 Gray/White. Directions say nothing about top coating it. It's been as durable I need it to be.
Here it is in the background of this "electrical" photo. Cheers, - Art