It would appear the current color combo is not original:
"Bill Flajole used the Forerunner as his personal transport until well into the 1960s, but in 1973 it was sold on. When Flajole built the Forerunner it featured green paint with ivory coves, but after he sold it the car was restored and the colour scheme was upated to the current livery of metallic purple with white coves. Inside there was matching white and purple leather upholstery with chrome wire wheels, and thereafter the Forerunner was displayed in the Blackhawk Museum for many years before being sold back into private hands in 1998."
https://www.below-the-radar.com/flajole-forerunner/