A series of images on a Colour Study by John Warwicker, director of Tomato UK. The images are a collection of colour differences between different cities. It is interesting to note that Warwicker is legally colour blind. :: http://studio.adobe.com/explore/gallery/tomato/page12.html
Below is a summary from the June 2001 issue of Creative Review where they profiled graphic designer John Warwicker, co-founder with Steve Barker of the influential design group Tomato.
Born in 1955, Warwicker studied graphic design at Camberwell School of Art, London, and Birmingham Polytechnic. He was a member of Fruer with Karl Hyde and Richard Smith (1980-1983), and creative director of Da Gama (1981-1984). He served as head of Art and Video at A&M Records (1984-1987), and creative director of Vivid I.D. (1987-1991). Tomato was launched in 1991. Warwicker reveals that he is completely colour blind, and that he has been working on a philosophy and art book, ‘Wordless Things: The Floating World Ukiyo-e’ for the past twenty years.