At the introduction of the Fiat 850 in 1964, a nice booklet with the available colors and upholstery was published. Nice to share.
If you want to see it in a larger format you have to click:

850 gamma colori klein
Large format

Even bigger, by colour:

115 - Rosso Medio

233 - Bianco

433 - Azurro Aquamarina

453 - Bleu Medio

456 - Bleu Scuro

583 - Beige

653 - Grigio Medio