[Doc]: `TABLEAU_COLORS` `XKCD_COLORS` etc undocumented

[ianhi]

Documentation Link

https://matplotlib.org/devdocs/api/colors_api.html#module-matplotlib.colors

Problem

The exported color arrays

matplotlib/lib/matplotlib/colors.py

Line 57 in 31d83a8

from ._color_data import BASE_COLORS, TABLEAU_COLORS, CSS4_COLORS, XKCD_COLORS

are not documented in: https://matplotlib.org/devdocs/api/colors_api.html#module-matplotlib.colors

I've always considered considered importing these directly to a stable part of the API, something supported by the usage in the examples:

matplotlib/galleries/examples/color/named_colors.py

Line 107 in 31d83a8

# xkcd_fig = plot_colortable(mcolors.XKCD_COLORS)

Suggested improvement

No response

[timhoffm]

Agreed, that they are public (otherwise we should have used a leading underscore).

The fix is to manually add .. py:data:: entries for these in https://github.com/matplotlib/matplotlib/blob/main/doc/api/colors_api.rst