I imported a DXF drawing file with colors that I would like to change.  It seems the layers imported but the colors in the layer properties are not what I'm seeing.  For instance most of the text is yellow (as it is on the DXF).  However, Solidworks layer properties indicate it should be black.  I've tried changing it to other colors but it stays yellow.  I've also tried creating a new layer but the colors will not change.  Is this a common problem and is there a solution?  While I could go back to the original DXF and change all those colors I will loose all the work I've already done.  Any ideas?  Thanks.