Posted for "John W. Cox" <johnwcox@pacificnw.com>:

 Aluminum oxide is the standard component in metallic paint formulation.
 It comes in five basic sizes.  Each provides a different finished
 effect.  Pearl might be another story.
 
 Good luck with transmission quality.
 
 John Cox
 
"""
  A question for you avionics types.  Does metal flake paint have any
  effect on internal antennas?  I hope to be painting next month and am
  considering several metal flake colors.  Thanks in advance for your
  help.
"""