Masking of line work on top of raster

We're finally making the jump to MS Connect 13 - 10.13.01.01 from Select Series 4. Having a little difficulty with the display of my line work over my raster aerial photo.

Previously, my line work (whatever color) would show up as I expected. Now the same file, same settings (AFAIK), same color table, the line work displays with a sort of "mask" of white around it, presumably to make it show up better....but it's actually the opposite....it looks terrible. It's predominantly on the "angled" line work not as bad on the horizontal and vertical stuff.

We have Black Background -> White option ON (So, yes, all of our "0" color lines should be black)

After a little research I found I can adjust the "masking" color by adjusting the RGB of the "B" color in the color, but of course when I change it to black, it stays white. Also, if it's any other color, then the line work switch's to white.....

This has got to be a setting I am missing somewhere.

Thanks in advance.