Update - I just acquired a 1989 Schwinn Circuit with full Sante groupset. There's so much more to Sante than just white. The 'white' cranks are pearlescent, up close. Same for the 'white' brake levers, and the hoods are gray, with a darker gray 'flange' between. There's a two-part cover over the headset, in two shades of gray, contrasting with the white bearing races.
The best part is the bike is in really good condition, while being incredibly dirty. I believe the dirt has served as a protective outer layer!