Although I don't know 102 cars very well as, I'm chiming in with some information that may be helpful: This thread
gives you an idea about what Giallo Paglierino looks like and contains factory images that indicate the dashboard may have been black on all cars. The soft top itself was probably black on all cars, but the soft top cover that is part of the rear seat backs is the same color as the seats. A page from the Engine Shop Manual indicates the engine compartment was painted black as on 106 Spiders.
'63 2600 Touring Spider (AR 191437, the car that started the 2000/2600 International Register, reassembly in progress)
ex-'65 2600 SZ (AR 856043, now a restomod in Austria)
Maintainer of a private 2600 SZ register (not the one in the Netherlands).