Style a Captcha that was made with CFIMAGE

["Abinidi" <webforumsuser@xxxxxxxxxxxxxx>]

I have created a  captcha using CFIMAGE that works as expected. Yet the 
background that it randomly generates is not the most appealing. 
 It would be cool if we could have it use an image that we define for the 
background, or even specifiy a background color, perhaps to match the sites 
theme or what not.

 Has anyone had any luck doing this kind of styling? or is it not even 
possible? If so, code examples would be nice :)