GTA colours combination:

This was the standard colours combination available for the GTA, but we know the existence of GTA with another Alfa colours like the GTA registered in our Registro Club GTA with the number 0314, ordered and produced by Alfa Romeo in "Blu Chiaia di Luna".
Interior colours

Interior leather colours codes available for GTA:

540 Nero Montecarlo
551 Cuoio Imola
552 Blu Le Mans
553 Grigio Silverstone  

In some countries leather upholstery was an extra for 147 GTA. These are the cloth upholstery colour codes:

346 tessuto Nero e Blu

352 tessuto Nero e Argento
381 tessuto Nero e Rosso