Contact Boeing... they have a group dedicated to maintaining certified color chips for every on of the [thousands] of officially designated colors. NOTE: There is a fee for each color chip provided.
IF the color is currently in production, they may also be able to ID a source for direct procurement of pre-mixed paint [polyurethane, epoxy, etc].
NOTE: I have contacted this same group (unsure of the current contact info) and asked them to give me FED-STD-595 color #s that were the closest approximation of Boeing color chip numbers that I needed to duplicate ["good enough for government work"]. Obviously the tech helping me had official color chips for FED-STD-595... and just came visually "as-close-as-possible".
Regards, Wil Taylor
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