NEW First of six investigations exploring art and value.
The Colour of Money. Picasso once swapped his painting Au Lapin agile for free meals and drinks at his favourite restaurant. By 1989 the auction house Sotheby's hailed it as 'the most important
20th-century painting ever to be offered'. But how do you persuade the super-rich to swap their fortunes for 'art'? Director Nicholas Rossiter
Executive producer Keith Alexander * PICTURE STORY: page 50