http://www.veloceregister.net/paintstory.html:
WHITES
White was the second most popular color after red for Alfa's of the period. Once again both Bertone and Farina had their own whites for Sprints/SS's and Spiders respectively. "Bertone White" was indistinguishable from Gardenia white-KF16878 (AR107) and has a little blue and black in the tint mix. Farina white (KF1865, AR106,AR201) appears slightly yellow along side Bertone white, and has nothing other than basic titanium white shown as the tint in the paint description. Farina painted 105/115 series spiders the same white-one of the few Alfa colors stretching back unchanged for thirty years. Ivory or Indian Ivory (KF16628, AR104, AR201) was also a popular yellow ivory color that looks wonderful with chrome.