Stories Purple-nosed dogs, a haemorrhoid ‘cure’ and a sunken fleet: a history of dyes as colourful as its subject Posted on June 6, 2023 by artNews Four excerpts from a book by Lauren MacDonald exploring the myths and origins of familiar colours Picasso portrait sells for €3.4m at Van Ham, a house record Purple-nosed dogs, a haemorrhoid ‘cure’ and a sunken fleet: a history of dyes as colourful as its subject