Dxf text color

Hello;

     I've opened a dxf, in SW, & it has yellow text, that, against the SW beige drawing background. I'd like to change the dxf's texts

color , & I'm having some difficulty. It appears some of the portions, are blocks. Any ideas's that might help the process?

Thanks, in advance;

Rob_D SW 2012 sp4

SolidworksDrawings And Detailing