def get_plot_properties_for_trajectory(plot_nums:int,
                                       base_color:str='r') -> tuple:
    """
    Get plot properties for trajectory.

    Args:
        plot_nums (int): The number of plots.
        base_color (str): Base color.

    Returns:
        tuple: (cs, alphas, linewidths, linestyles)
    """
    alphas = [ 1. ]
    linewidths = [ 1.5 ]
    linestyles = [ 'solid' ]
    alphas.extend([ 0.8 for _ in range(plot_nums-2) ])
    linewidths.extend([ 1.5 for _ in range(plot_nums-2) ])
    linestyles.extend([ 'dotted' for _ in range(plot_nums-2) ])
    alphas.append(1.)
    linewidths.append(1.5)
    linestyles.append('dashed')
    cs = [ base_color for _ in range(plot_nums) ]
    return (cs, alphas, linewidths, linestyles)