[plt-scheme] trivial color issue in DrScheme

I have changed the background color in DrScheme to black, and adjusted 
the foreground colors accordingly. However, it seems that there is one 
foreground color that is not adjustable, and that (of course) defaults 
to black... 
The affected text is the previously typed commands in the interactive 
window, and all of the text in the definition window after clicking run 
and executing one command. I cannot find where in the settings this is 
defined. Am I missing something here?

Ronny.