Horizon explores the evidence for the theory that colours are really an illusion, experienced subjectively depending on age, sex and even mood.
Roses are red, violets are blue but according to the latest understanding these colours are really an illusion. One that you create yourself.
Horizon reveals a surprising truth about how we all see the world. You may think a rose is red, the sky is blue and the grass is green, but it now seems that the colours you see may not always be the same as the colours I see. Your age, sex and even mood can affect how you experience colours.
Scientists have unlocked the hidden power that colours can have over your life - how red can make you a winner, how blue makes time speed up, and more.
You are at the first episode