I have unpacked from original factory boxes many NOS British fuel tanks, fenders, and sheet metal pieces, and the original paint has nowhere near the quality that exists on the "restored" examples of the same bikes that I've seen. This includes my '67 Triumph. Same goes for cars. It's practically impossible to duplicate original finishes today, given the paints now available.
2015 BMW R9T, 2010 Ducati 1098 Streetfighter S
2009 Kaw 650 Versys, 1967 Triumph 650 TT Special