assigning the same color for the largest slice in a pie chart

[AaronWestcott via AccessMonster.com]

Hello all,

I hope that someone might have an idea or suggestion to assign the same color
to the largest slice of a pie chart, then the same color to the next largest
slice. Right now it seems to assign from smallest slice to largest. Meaning
the smallest slice always has the same color on up.

Any help would be appreciated.

thanks