I had a 1986 kx125 head that I wanted to clean up.
So I vapor blasted it, dried it and painted it with some High head black that I had sitting on the shelf, and baked it at 200 degrees F for 1 hour.
Looked great, but I didn't have a clue about the color until I set the head on the cylinder..
Yeah yeah it's a bad pic..
It says DE 1634 LOW GLOSS BLACK
And the results..
It's not a perfect match but if you painted the entire engine you would have a hard time ever knowing that it wasn't factory