Ability to color code the "Other" Category for Pie and Donut Charts

Somewhere in the settings for pie and donut charts it would be great to be able to hard-code a color for the "Other" category that gets created when there are many items in the series. We have a lot of color rules setup for various fields and it is annoying/hard to read pie charts when the "Other" category's color keeps changing as we filter the cards in various ways.