Official Classical Singles Chart such as "Fifty Shades of Grey", "The Dark Knight Rises" and "Man of Steel". In July 2012, a rendition of "Spem in alium" by the Tallis Scholars topped the chart following its usage in "Fifty Shades of Grey". E. L. James, author of the original novel on which the film was based, said that she was delighted that her readers had been introduced to the piece of music, and that it was a "deserved number one". Three weeks later, the London Symphony Orchestra reached number one after their version of "Chariots of Fire" by Vangelis was used in the 2012
Shades of Grey of the Ishihara colour perception test. The beginning of the book contains a quote from philosopher Alfred North Whitehead on the subject of colour: In a 2009 interview, the author mentioned two further books in the series. The titles "Painting by Numbers" and "The Gordini Protocols" have been suggested; however, neither is scheduled for publication as of June 2017. In a webchat, Fforde said a prequel to the series: "7 Things to Do Before You Die in Talgarth", may be published in 2019. Shades of Grey Shades of Grey: The Road to High Saffron (2012, simply titled Shades of Grey