5/5 Tracey Logan discovers how the colour forecasting industry arose out of World War I.
4/5 Tracey Logan visits a traditional dye house in Leeds to see how they create colour.
3/5 Does colour change the way we feel and behave? Tracey Logan investigates.
2/5 Tracey Logan explores how language changes our colour perception.
1/5 Tracey finds out how our bodies create colour and sees the world through colour-blind eyes