If you want an under over configuration for your forum, I have modified the product and uploaded it to my site.
http://www.wpguild.com/downloads/cybchat-rows.xml
I've had to hard code the message entry background color due to my forum style. If you use this modified version and want to change the color, find this entry:
background-color:#000000
Replace #000000 with a hex code that suits your style, or you can replace that with the actual style code.