the color setting of my grass environment/program

[Elwin Koster]

===========================================================================
  	Elwin Koster                           
	University of Groningen             
	Architectural History              
	contact me by:	
	email - ekoster at let.rug.nl
	phone - (+31) 50 636096  
	mail  - PO Box 716      
		9700 AS Groningen 
		the Netherlands
========================================================================== 
X-Mailer: ELM [version 2.3 PL11]

Oke, now its time for a silly question.
I have worked the last months with an awfull display where the Grass-program
has different colors.
e.g. grass has a white-background, but when I start a terminal all colors
become purple, exept for the working-screen.
Is there any possibility to change this colors ?
I could not find anything in the grass-functions (or is it a unix-function I 
have to use ?).

Thanks for helping me out.
Elwin Koster