Fix Latex Problem Viewing White Figures on Black Background

[HallsofIvy]

This is embarassing. This happened before and there was an easy fix but I've forgotten it!

I had to reload Windows XP and now all latex comes out white figures on a black background. When this happened before, I was told to download something but I've forgotten what it was. I tried to look up the thread where I asked before but couldn't find it.

Any one have any suggestions?

 

[Doc Al]

I think I found it:
https://www.physicsforums.com/showthread.php?t=319605

 

[HallsofIvy]

Thanks, Doc, that "worked a treat".