The "Palettes" series explores the techniques, history and controversies behind some of the world's greatest paintings and the artists who created them. With the latest technology in video animation and art restoration, the secrets, some hidden for centuries, of each painting are revealed in detail to deliver surprising insights and intrigues into the history and evolution of art.DUCHAMP:"Nu descendant un escalier n" 2" (1912) Marcel Duchamp A French artist and a playful man, Duchamp challenged conventional thought about artistic processes and art marketing through subversive actions. When first submitted to appear at the Cubist Salon des Ind pendants, Nude Descending a Staircase, No. 2 was Duchamp's first work to provoke significant controversyJurist Albert Gleizes asked Duchamp's brothers to have him withdraw or rename the painting. Duchamp quietly refused, later recalling, "I said nothing to my brothers. But I went immediately to the show and took my painting home in a taxi. I saw that I would not be very much interested in groups after that."KLEIN:"Anthropom trie de l' poque bleue" (1960)Yves KleinBlue traces, blue sponges, the blue period... Yves Klein certainly deserved his nickname "Yves the monochrome." Even though other colours appeared in his work, blue was his obsession, and more than a means of expression, blue became a source of spiritual energy and inspiration. The colour blue exemplified his universe, inspiring the use of differing and original techniques (for example Klein using his models as actual "living" brushes). The "Anthropom tries" are a meditation on the imprint, the trace left, the disappearance and different variations on the theme of incarnation.WARHOL:"Ten Lizes" (1963) Andy WarholTen identical faces printed in black, over two rows. But are they really identical? With subtle revelations the observer gradually notices a myriad of small differences, minor variations and inconsistencies. Andy Warhol created this image from a photo of actress Elizabeth Taylor and repeated it ten times using silk-screen printing techniques. Why did he choose her image as his subject and repetition as his theme? Working in New York at the epicentre of the Pop Art movement, Ten Lizes breaks from the traditional art of portraiture, but demands as much decoding as pictures from earlier ages.