Art critic and curator Robert Storr reflects upon how Gerhard Richter makes the impossible possible in 192 Farben, Richter's first ever Colour Chart. The Colour Chart series became the most important and radical groups of works within Richter's oeuvre. 192 Farben, this masterpiece from these early and iconic works from 1966, will be one of the highlights of the Contemporary Evening Auction in London on 14 October at 19:00 BST. Watch the livestream on Sothebys.com.