Ink, the overall effect doesn't look like bare metal at all. I agree with Krusty, it looks like a fine mist of blue over a white base. Also agree with the oil streak on the cowling. Needs to be blown back parallel to the deck, because, at rest, it would run straight down. The only thing that would make it streak back would be prop wash, so that needs to go laterally. The weathering on the belly looks great, as usual, and I'll always make the same comment about the gun soot aft of the barrels. I think most of the good BMF effects start with a silver/gray color, and then use the specularity in the materials file to get the proper amount of "sheen". Greebo has the best BMF IMO, so perhaps you can message him for some recommendations...