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I'm hoping you can help me find a book's title and author. It was a book I had seen before but didn't buy.
The plot followed a private detective set in a future where all people lived in segregated communities based on their similar interests. So for instance, scientists would live in a district where others were like-minded in their pursuit of knowledge, etc. This private detective lived in a district where people were fascinated by displaying and observing the vibrant spectrum of colours. I'd like to express my thanks in advance for any help you can give me.