I used JT Outfitters pewter. To be honest it didnt match the instrument cluster that well so i sprayed that too. I used the same stuff on the ash tray which seemed to match the glovebox pretty well. the cluster was just a little more silvery from the factory on my 40.
I printed this bezel in ABS. The tach is from an FJ60 and I printed a housing that holds it and screws into the bezel. The side of the bezel that doesn’t have screws has a tab that slips behind the dash to secure that side.