A black poly spray would be compatible.

You'd certainly need to do a very delicate gentle burst that just covered the edges by 0.5"/12mm or so, not to hide too much of the top. Which means holding the can over the body and spraying outwards, aiming for a point well beyond the edge of the body so only the feather edge of the spray hits the body. This is probably a case where a cardboard mask held off the body by an inch or so would be useful.