Is there anything comparable to a colormap in Pygal?

matplotlib has [colormaps](https://matplotlib.org/examples/color/colormaps_reference.html) that help show the variation in a dataset. Does Pygal have anything like this?

I know I can loop through a data set and give each point an individual color, but I was wondering if there are any built-in gradients I can use without looping through each point individually.

The issue names no Pygal files, tests, or entry points. Start with the linked matplotlib colormaps reference and inspect Pygal's existing color-related behavior; done would mean establishing whether a built-in gradient or colormap capability should exist and defining how it would be verified.

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