I read all of the arguments about putting the tv above the fireplace and ultimately decided that was what we wanted to do. The problem is, when they installed the fireplace it was smaller than I originally thought. I want the tv and fireplace to be balanced and the wall will be covered in ivory split-faced travertine. From someone with no design experience, would it look bad to border the fireplace with black marble to give the illusion of a wider fireplace or would the smooth marble not work well with the rough texture of the travertine. I would appreciate some expert opionions so I don't make a costly mistake that I will regret later. thanks!