Make a palette that blends between a list of colors.
Parameters:
colors:sequence of colors in various formats interpreted by input
hex code, html color name, or tuple in input space.
n_colors:int, optional
Number of colors in the palette.
as_cmap:bool, optional
If True, return as a matplotlib colormap instead of list.
Returns:
palette or cmap:seaborn color palette or matplotlib colormap
List-like object of colors as RGB tuples, or colormap object that
can map continuous values to colors, depending on the value of the
as_cmap parameter.