Editor BG Color?

I know I can change the colors of the editor globally using the config file and setting:
FCKConfig.EditorAreaStyles = 'body {background: #E8E8E8 url(/cpImages/filler.gif); color: #000000;}';

I need to do this at the instance that ColdFusion is calling the tag.
What can I pass to set this specifically to each time it is displayed?

Please advise