A lot of us interior bloggers talk about colour trends all the time and always look at the work of colour experts like Karen Haller for commentary and ways to apply the latest trends in our homes. Having met Karen in a colour psychology workshops a few years back, I was really excited to hear that this month she is publishing her very own book, The Little Book on Colour, a definitive guide to using the power of colour to improve your happiness, wellbeing and confidence.