After our last post involved looking at so many historic photographs, I happened upon this interesting blog (link below) through a friend. Turns out that historic black & white photography created a very different grayscale than the one we are familiar with today. While rich purples in modern film may look dark gray or even black, in historic images, they can look very pale. Conversely, canary yellow shows up light in modern black & white, but may appear very dark in in historic ones.
Check out the color wheels as photographed with modern film and historic wet-plate technology and then try to decide what color Mary Livingston's dress was, at left. Your mind may be just a little bit blown:
The Sewing Academy: Curious About Color?