Linux colorization of terminal output is very straining to the eye even for normal people and absolutely meaningless for color-blinds. I find it irritating as it makes it really hard to see, especially with the bad choice of colors like deep-blue on black. It you are in the same boat read on.

Steps:
1. su as root.
2. open in vi /etc/DIR_COLORS.xterm and /etc/DIR_COLORS
3. Change COLOR tty to COLOR none
4. Save the file and exit from vi.

You are done!