Karen Haller FRSA is a leading international authority in the field of behavioural colour & design psychology. Karen specialises in Human-Centred Design and how our relationship with colour, design and nature affects and influences us.  She works alongside businesses and designers on how to use it to influence positive behaviour and well-being. She’s featured regularly in the media and is a sought-after industry speaker and panellist. Karen is the bestselling author of ‘The Little Book of Colour, How to Use the Power of Colour to Transform Your Life.