Pop Art Usage of Popular Icons

We have a client that is interested in painting, in his distinctive, pop-art style, certain recognizable food items (for example, a piece of candy), some bearing word marks, and others without. Once painted, the items will still be recognizable. Can anybody point me to a treatise that would discuss the issues arising from such usage (for example, copyright (and fair use), trade dress, dilution, etc.)? My brief look at Nimmer was not fruitful.

Thanks.

-- 
Douglas M. Lipstone, Esq.
Katz, Hoyt, Seigel & Kapor LLP
11111 Santa Monica Blvd., Suite 820
Los Angeles, CA  90025


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