class tag instead of style attribute? or just don't apply the background color

Right now jquery_media adds a background color to a wrapper div using a style attribute. Wouldn't it be better (and more flexible) to give that div a class so css styles can be applied? For example, I'd rather the background stay transparent, but i can't do this with the colorpicker widget.

So this is sort of a feature request, but in the short term i'd like to get rid of the background color, if there's a quick way to do just that.