OK, guys to clear it up a bit I am going to make a post and someone may ask to make it a sticky, but as a painter in the Automotive Collision industry I have all these paint codes and could post what they equal as far as color if Shaggy or a mod will make it permanent for all to future reference.
PX8 = Regular Black Clearcoat
PXR = Brilliant Black Clearcoat - This is the one appearing to have multiple color metallic in it which looks great in the sunlight or street lighting but kinda dusty looking on a cloudy, sunless day. The formula actually has a new pearl to the paint industry call Xyrillic Pearl. It has the ability to flop/shift colors as well as pop a whole lot more than plain old metallic aluminum particles.