Grub on start up changed color from purple to black?

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http://askubuntu.com – A while ago, i reinstalled 12.04 on my computer and a few day later when My system restarts after updating itself, the grub is no longer purple. It is just black and I didn't change anything that could do that. my system works fine and there is no problems with anything. I just don't like looking at a black grub while waiting in the booting process. Can you change the grub back to being purple or choose a different color? (HowTos)