def cc_colors(coord, lighness=0):
    """Predefined CC colors."""
    colors = {
        "A": ["#EA5A49", "#EE7B6D", "#F7BDB6"],
        "B": ["#B16BA8", "#C189B9", "#D0A6CB"],
        "C": ["#5A72B5", "#7B8EC4", "#9CAAD3"],
        "D": ["#7CAF2A", "#96BF55", "#B0CF7F"],
        "E": ["#F39426", "#F5A951", "#F8BF7D"],
        "Z": ["#000000", "#666666", "#999999"],
    }
    return colors[coord[:1]][lighness]