could not change colors

[Mark Ryden]

Hello,
  I tried to change the colors of the grub menu which appears
        when booting my Fedora Core 3 machine.
        I have tried to change it to each of the following:
  (in /boot/grub/grub.conf):

1) color green/black light-green/black
  2) color cyan/blue white/blue
  3) color black/yellow
        
        and in all 3 trials the colors were the same as before (blue and black).

        Any idea why ?
        MR