def color_code(base):
    """Unix console color code for nucleotides

    Args:
        base (str): nucleotides (ACGT)

    Returns:
        str: colored nucleotides
    """
    if base == "G":
        return "\x1b[48;5;220mG\x1b[0m"
    elif base == "C":
        return "\x1b[48;5;204mC\x1b[0m"
    elif base == "A":
        return "\x1b[48;5;118mA\x1b[0m"
    elif base == "T":
        return "\x1b[48;5;81mT\x1b[0m"
    else:
        return base