How to use the proplot.colormath function in proplot

if isinstance(color, str) or (np.iterable(color) and len(color) == 2):
        try:
            color = mcolors.to_rgb(color) # ensure is valid color
        except Exception:
            raise ValueError(f'Invalid RGB argument "{color}".')
    elif space == 'rgb':
        color = color[:3] # trim alpha
        try:
            if any(c > 1 for c in color):
                color = [c/255 for c in color] # scale to within 0-1
            color = tuple(color)
        except Exception:
            raise ValueError(f'Invalid RGB argument {color}.')
    # Translate from other colorspaces
    elif space == 'hsv':
        color = colormath.hsl_to_rgb(*color)
    elif space == 'hpl':
        color = colormath.hpluv_to_rgb(*color)
    elif space == 'hsl':
        color = colormath.hsluv_to_rgb(*color)
    elif space == 'hcl':
        color = colormath.hcl_to_rgb(*color)
    else:
        raise ValueError('Invalid color "{color}" for colorspace "{space}".')
    return color

def to_xyz(color, space):
    """Translates from the RGB colorspace to colorspace `space`. Inverse
    of `to_rgb`."""
    # Run tuple conversions
    # NOTE: Don't pass color tuple, because we may want to permit out-of-bounds RGB values to invert conversion
    color = to_rgb(color)
    if space == 'hsv':
        color = colormath.rgb_to_hsl(*color) # rgb_to_hsv would also work
    elif space == 'hpl':
        color = colormath.rgb_to_hpluv(*color)
    elif space == 'hsl':
        color = colormath.rgb_to_hsluv(*color)
    elif space == 'hcl':
        color = colormath.rgb_to_hcl(*color)
    elif space == 'rgb':
        pass
    else:
        raise ValueError(f'Invalid colorspace {space}.')
    return color

def to_xyz(color, space):
    """Translates from the RGB colorspace to colorspace `space`. Inverse
    of `to_rgb`."""
    # Run tuple conversions
    # NOTE: Don't pass color tuple, because we may want to permit out-of-bounds RGB values to invert conversion
    color = to_rgb(color)
    if space == 'hsv':
        color = colormath.rgb_to_hsl(*color) # rgb_to_hsv would also work
    elif space == 'hpl':
        color = colormath.rgb_to_hpluv(*color)
    elif space == 'hsl':
        color = colormath.rgb_to_hsluv(*color)
    elif space == 'hcl':
        color = colormath.rgb_to_hcl(*color)
    elif space == 'rgb':
        pass
    else:
        raise ValueError(f'Invalid colorspace {space}.')
    return color

def shade(color, shade=0.5):
    """Changes the "shade" of a color by scaling its luminance channel by `shade`."""
    try:
        color = mcolors.to_rgb(color) # ensure is valid color
    except Exception:
        raise ValueError(f'Invalid RGBA argument {color}. Registered colors are: {", ".join(mcolors._colors_full_map.keys())}.')
    color = [*colormath.rgb_to_hsl(*color)]
    color[2] = max([0, min([color[2]*shade, 100])]) # multiply luminance by this value
    color = [*colormath.hsl_to_rgb(*color)]
    return tuple(color)

color = color[:3] # trim alpha
        try:
            if any(c > 1 for c in color):
                color = [c/255 for c in color] # scale to within 0-1
            color = tuple(color)
        except Exception:
            raise ValueError(f'Invalid RGB argument {color}.')
    # Translate from other colorspaces
    elif space == 'hsv':
        color = colormath.hsl_to_rgb(*color)
    elif space == 'hpl':
        color = colormath.hpluv_to_rgb(*color)
    elif space == 'hsl':
        color = colormath.hsluv_to_rgb(*color)
    elif space == 'hcl':
        color = colormath.hcl_to_rgb(*color)
    else:
        raise ValueError('Invalid color "{color}" for colorspace "{space}".')
    return color

strings to tuple. Inverse of `to_xyz`."""
    # First the RGB input
    # NOTE: Need isinstance here because strings stored in numpy arrays
    # are actually subclasses thereof!
    if isinstance(color, str):
        try:
            color = mcolors.to_rgb(color) # ensure is valid color
        except Exception:
            raise ValueError(f'Invalid RGBA argument {color}. Registered colors are: {", ".join(mcolors._colors_full_map.keys())}.')
    elif space=='rgb':
        color = color[:3] # trim alpha
        if any(c>1 for c in color):
            color = [c/255 for c in color] # scale to within 0-1
    # Next the perceptually uniform versions
    elif space=='hsv':
        color = colormath.hsl_to_rgb(*color)
    elif space=='hpl':
        color = colormath.hpluv_to_rgb(*color)
    elif space=='hsl':
        color = colormath.hsluv_to_rgb(*color)
    elif space=='hcl':
        color = colormath.hcl_to_rgb(*color)
    else:
        raise ValueError('Invalid RGB value.')
    return color

def to_xyz(color, space):
    """Translates from RGB space to colorspace `space`. Inverse of `to_rgb`."""
    # Run tuple conversions
    # NOTE: Don't pass color tuple, because we may want to permit out-of-bounds RGB values to invert conversion
    if isinstance(color, str):
        color = mcolors.to_rgb(color) # convert string
    else:
        color = color[:3]
    if space=='hsv':
        color = colormath.rgb_to_hsl(*color) # rgb_to_hsv would also work
    elif space=='hpl':
        color = colormath.rgb_to_hpluv(*color)
    elif space=='hsl':
        color = colormath.rgb_to_hsluv(*color)
    elif space=='hcl':
        color = colormath.rgb_to_hcl(*color)
    elif space=='rgb':
        pass
    else:
        raise ValueError(f'Invalid colorspace {space}.')
    return color

def shade(color, scale=0.5):
    """Changes the "shade" of a color by scaling its luminance channel by `scale`."""
    color = to_rgb(color) # ensure is valid color
    color = [*colormath.rgb_to_hsl(*color)]
    color[2] = max(0, min(color[2]*scale, 100)) # multiply luminance by this value
    color = [*colormath.hsl_to_rgb(*color)]
    return tuple(color)

# NOTE: Need isinstance here because strings stored in numpy arrays
    # are actually subclasses thereof!
    if isinstance(color, str):
        try:
            color = mcolors.to_rgb(color) # ensure is valid color
        except Exception:
            raise ValueError(f'Invalid RGBA argument {color}. Registered colors are: {", ".join(mcolors._colors_full_map.keys())}.')
    elif space=='rgb':
        color = color[:3] # trim alpha
        if any(c>1 for c in color):
            color = [c/255 for c in color] # scale to within 0-1
    # Next the perceptually uniform versions
    elif space=='hsv':
        color = colormath.hsl_to_rgb(*color)
    elif space=='hpl':
        color = colormath.hpluv_to_rgb(*color)
    elif space=='hsl':
        color = colormath.hsluv_to_rgb(*color)
    elif space=='hcl':
        color = colormath.hcl_to_rgb(*color)
    else:
        raise ValueError('Invalid RGB value.')
    return color

color = mcolors.to_rgb(color) # ensure is valid color
        except Exception:
            raise ValueError(f'Invalid RGBA argument {color}. Registered colors are: {", ".join(mcolors._colors_full_map.keys())}.')
    elif space=='rgb':
        color = color[:3] # trim alpha
        if any(c>1 for c in color):
            color = [c/255 for c in color] # scale to within 0-1
    # Next the perceptually uniform versions
    elif space=='hsv':
        color = colormath.hsl_to_rgb(*color)
    elif space=='hpl':
        color = colormath.hpluv_to_rgb(*color)
    elif space=='hsl':
        color = colormath.hsluv_to_rgb(*color)
    elif space=='hcl':
        color = colormath.hcl_to_rgb(*color)
    else:
        raise ValueError('Invalid RGB value.')
    return color