It was a colour once reserved for emperors and the elite. But a lab mishap soon changed purple forever.  Cultural historian and author of the book The Secret Lives of Colour, Kassia St Clair tells Marc Fennell (Stuff The British Stole) the story of how a London teenager’s failed experiment transformed how fabric dyes were made, how we dressed and how power was perceived.   Binge all the episodes of No One Saw It Coming now on the ABC listen app (Australia) or wherever you get your podcasts. Get in touch: Got a story for us? We'd love to hear from you! Email us at noonesawitcoming@abc.net.au  If you'd like to hear more from Kassia St Clair, listen to her tell the story of The Lingerie Makers who put Neil Armstrong on the Moon.