Colouring is for kids - right?Not necessarily.Adults are getting into colouring in a big way. It's said to relieve stress and anxiety, even lower your blood pressure. It's definitely cathartic.So - you can colour geometric shapes with your morning coffee - if you want to.But free spirits are looking for something more, so what about an 'adult' colouring book?The hand-drawn pen outlines in this book are taken from alternative art photographs to provide...