Need paint code for black '89 GTU

[Fuel]

I hope someone on here can help. I've a black '89 Beretta GTU and am in the process of repainting some parts on the car but the id numbers have been rubbed off. Paint guys cannot find the code in their system and the dealer cannot as well. If you or someone you know has one of these the code is on the spare tire panel in the trunk. Could take a part in for color matching but I would rather have a code to give the shop since i've heard there are at least four different color flakes that are added to the black base including magenta.

[86FieroSEv6]

Found this little blurb at the 'pedia. . . "The GTU was available 1988-1990. Beretta GTUs (w/ FE7 suspension package) were shipped to Cars and Concepts where they were equipped with 16x7" aluminum alloy wheels, custom ground effects, rear spoiler, mirrors, custom trim, and decals. With the FE7 suspension the GTU was capable of 0.92 G on the skidpad, well above most cars in its class. GTUs were only available in black, red and white.". So, it seems that there was only one "black" for GTU's. I imagine they were factory black before shipment to Cars and Concepts. Still looking and will report back.