The easiest thing to do would be to paint the whole panel in black, then drybrush the raised details with silver paint. If you don't know what drybrushing is, it is dipping a brush in paint, then wiping almost all of the paint off on a paper towel or card, then lightly dragging the 'dry' brush across the part. There should be just enough paint left on the brush to adhere to the raised detail, but not fill the recesses. The result should be just what you're looking for.
Be aware, this takes practice to remove the right amount of paint from the brush (I'm still working on it
). The nice thing is, if you mess up, it's easy to apply more black paint and try again.
HTH,
Adam Howard