What is colour? Where does it come from? How do we see it? How does it affect our mood, our history, our politics? This year the 20th Summertown Art Forum will investigate and discuss how we see colour with Ophthalmic Surgeon John Salmon; where it comes from with Archaeologist Charlie Jones; how it fits into our history, culture, art and politics with Author, Broadcaster and Art historian James Fox; and how colour can be used to create atmosphere and mood with Painter Alison Berrett. The Art Forum is chaired by Journalist and Broadcaster Jim White.