That would have to be done through the use of Styles - creating a separate
Style for each color. The color palette itself cannot be modified.

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HTH |:>)
Bob Jones
[MVP] Office:Mac
> I'd like to be able to define a default color pallette for text as well as
> graphics so that when I go to choose a color, I don't have to redefine the
> same custom colors I want to use over and over again. Can that be done?