What's it like to publish a book as an expert in your field? Karen Haller is a behavioural colour and design psychology expert and is the author of The Little Book of Colour. Karen and I talk about some of the highs and lows of traditional publishing, some of the particular challenges she faced, as well as the many opportunities it opened up for her when her book became a huge success and was published in 14 languages. We also dive into what colour psychology is and how the book fits into Karen's aim to help people be less afraid of using colour.