You can add the following lines to your ~/.preferences file:
*.ForegroundColor: WhiteIf you don't have a .preferences file, you can create one.
*.BackgroundColor: Black
If you want only EZ to come up reverse video, but the other Andrew applications (such as eq, and bush) to come up normal, put these two lines in your .preferences file instead:
ez.ForegroundColor: WhiteIt is also possible to set the colors in the command line as your are starting EZ. Use the -fg option to set the foreground color and -bg to set the background color. So EZ in reverse video would be started like this:
ez.BackgroundColor: Black
ez -fg white -bg black &