His color book "evolved into the Pantone color chart," according to Lewis. "Ridgway's Colors" are still used today by mycologists, philatelists and food colorists, according to Lewis' 2012 book.

“Appearing in both monochromatic statements and in combination with other colours, either solidly or in prints and patterns on the runway, Pantone 18-1750 [the official colour chart name] brings ...