According to this ad, Packard had a Board of Color who would decide on the car color schemes. Just imagine the fights.
Some quasi-random knowledge:
Having your car the same colors as a harlequin macaw would certainly get noticed.
Macaws can live for 50-100 years.
In 1930 (three years after this ad), the average life of a new car was 6.75 years.
The average lifespan of a modern car is not quite 12 years.
Something for the auto buffs: Why Packard Died
Want a Packard of your very own? Looks like a 1929 Packard 645 Deluxe Eight goes for an average of $212,926 these days. What a bargain!