Here's a FAQ thread with info on painting Chevy hubcaps.
http://67-72chevytrucks.com/vboard/s...d.php?t=455805
In other threads, I've read that Ford engine blue and Krylon True Blue #1910 are close matches for the bowties. The black on mine when new was what I'd call satin if I recall correctly. Maybe even flat. They did get a little shinier as they were waxed many times but never approached gloss or semi-gloss.
Here's a pic on one of my originals. Note that the black appears a little out of register with the recessed area, However, only the flat portion of the black and blue recessed areas should be painted.
EDIT: Added second pic. Looks like the black may extend slightly over the curved areas, but that probably just reflects 1969 quality.