Color Ramp Symbology Help

I'm running ArcGIS 10 and trying to add more color ramp styles to the ones that are provided to you under Symbology, Categories, Unique Values. I've got a bunch of color ramp styles now added for my use under the Style Manager, but none of those color ramps appear as choices under the color ramp drop down box for unique valued symbology.

Anyone know how to get more color ramps added to the drop down box?

Thanks