I agree that there is no paint that looks like real metal.
The only solution thhat I can come up with is to use a dummy prop and hub for display. Metal foil can be applied, and it will look great. In fact, I'm just getting ready to order some from here: http://www.aero-accessories.com/Builders.html
I don't think that it would be safe to apply it to a flying prop, however.
Years ago, I purchased some Krylon aluminum paint. I believe the color was labeled "Chrome". Obviously it isn't chrome, but it's the best looking "metal" paint that I've seen. If you clear coat it, though, it will look like silver Monokote.
I sand my wood props smooth, and seal them with a clear. Minwax Polycryllic or their Polyurethane (oil base) will work well. After the grain is properly sealed, a coat of primer is applied, and then the "chrome" paint.
The sealed wood prevent wood grain from showing through the finish. I feel that it is an important step.
After paint, a nice prop logo completes the project.
If you don't want to go to all the work, Xoar has silver props with a nice finish on them. You may want to take a look.
Hey, hookedonrc, Take a look in the lower left hand side, of the fuselage pic. See what's on the floor ? LOL