colorblind_colors.py

from typing import List, Optional
import seaborn as sns

def get_colors(num_colors: int, alpha: Optional[float]=1) -> List[List[float]]:
    """Get a list of colorblind colors,

    :param num_colors: Number of colors.
    :param alpha: The transparency
    :return: List of colors. Each color is a list of [r, g, b, alpha].
    """
    cs = sns.color_palette(palette="colorblind", n_colors=num_colors)
    cs = [list(c) for c in cs]
    for i in range(len(cs)):
        cs[i].append(alpha)
    return cs