In PowerPoint, fully select the Excel chart and the Excel toolbars should
appear replacing PowerPoint's.
Tools / Options / Color, select colour in the palette to be customized,
Modify color

Regards,
Peter T

"Laurie" wrote in message
...
How do I erase all the custom colors in the color palette?

I am trying to edit a legend key color in an Excel graph embedded into a
PowerPoint presentation. It won't let me change the color (Office
Professional 2003)
I've tried changing the color in both programs without a resulting change
in
the graph legend color. Thanks.