one more file for both wings and fuselage that would work like alpha channel does to transparencies, except this one would determine the reflections, highlights.
It is a must for camos that mix up a bare metal and paint. Like the P-51D that is whole glossy and snhiny but the shine also applies to the painted parts which is all wrong... So any camo applied to P-51D that is not whle baremetal but is whole painted... will look extremely unrealistic in the sim since the plane will then look like if it is made of glass...
