You can change the default colors in the PASSPORT screen.
To change the color of text or background
Use the Options>Colors menu command.
Click on the Customize... button and the Customize Color Scheme dialog box will appear.
Select a Category. Each category has a default color. A sample of the chosen category will appear in the Sample area.
Select a color from the Colors area or select the Color Palette button to choose a custom color. The sample will change to the chosen color.
Repeat steps 3 and 4 as many times as necessary.
When you are finished click the OK button to save and exit.
Enter a name for your color scheme and press the Save button.
The name of your color scheme will appear in the Custom Color Scheme File area to let you know which color scheme is currently being used.
Click the OK button to exit.
Note: Color schemes should be customized and used for a particular terminal emulation type. In other words, if you define a color scheme for a TN3270 session, then do not use the same color scheme for a VT session. This is because the color categories are different for each terminal emulation type.