Four Color Theorem

[Camden Daily]

Does anyone have any experience in dynamically coloring a map with
only 4 colors?  I know that it would be easier to just pick out the
colors myself, but I thought perhaps someone out there might have come
up with a good mapscript algorithm to do this.

I'd imagine the first step would be constructing a table defining
which polygons on the map border each other.  Anyone have a good
method of doing that?

-Camden Daily