Have you tried to look at the stylesheet for the template? One thing that really helps me with debugging CSS is using Firefox browser with Firebug. Firebug allows you to look at the styles, and see which style is overriding which. It is very useful. I think Chrome has a built-in inspect element feature in the (right-clicked) context menu, but it is not as thorough as Firfox.
Also, if the listing is publicly available, then you can send me the web address to the page with the listing and I can have a quick look for you if I'm not too busy.