[GRASS5] fill areas with color in NVIZ

Dear list,

I just tried to visualize areas in NVIZ and define a fill color (current
GRASS 6.1-cvs). I was wondering because I thought it is possible as shown
here:

http://grass.itc.it/images/grass51_nviz.jpg

Am I wrong or was it only implemented in earlier NVIZ versions? Or how can I
define area colors in NVIZ, I couldn't find the button?

thanks a lot
  Otto

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