Good point, but I mean to replicate shadows and add depth for things, the way regular black works for lighter colored stuff.
It's a very specific use.
The alternative is what I did a little bit of on the GP9 I recently did: drybrushing a dark gray on the raised grills to add a little contrast.
Ed Dry brushing the highlights works well. I have started to use Tamiya Panel Line Paint and it works a treat. In grills, around doors, latches etc on Locos. On the sides of my HOn3 rolling stock. I use it on Autos and add around door jams, hood lines and as we call them boot lid gaps. Sure makes these areas look like they should. The product settles to the bottom of the jar so you can add it thick if you want.
Rod.
