I'll post this weekend scans of 1955-2nd color interior/exterior information from the Chevrolet Truck Data Books (early August 1955 and late August 1955). Included will be nice GM color chips for all two-tone exterior options (late August 1955).
Arabian Ivory is not listed/shown in 1955-2nd. Bombay Ivory and Pure White are shown.
The early issue of the 1956 Truck Data Book (15 November 1955) shows Arabian Ivory, Bombay Ivory, and Pure White. I'll also post scans of that information and color chips.
