Here it is. It seems designed to blur the differences, and to minimize the impact of the widespread Bush victory (he got at least 40% support in 47 states, while Kerry failed to get 40% in 13 states.
A better way to illustrate vote strength (2000 election) keeps the Red and blue, with lighter shades for lower margins (white for even), instead of muddying up the picture with purples.
-PJ