Light text from importing Dxf?

Hello;

     I have a situation, where a customer, sent us a file, as a dxf; when I brought the dxf in to SW, it was very light printing it; I first changed the color, but that didn't help that much. I then went in & changed the text; to Arial, & it would print pretty good. That however is a very cumbersome process seeing that the text is many different sizes, all over the drawing, in including revisions, & t-block, text etc.etc.. Does anyone know of a good way to by-pass that process, because our customer, has now sent a completely different file, to replace the former?

Thanks in advance for any input;

Rob_D SW 2012 sp4

SolidworksDrawings And Detailing