Should be a follow up to documentation changes in #30065

I think this either overlaps or is a dupe of #28750

Over the years I have made a lot of use of the other color reference examples List of named colors and Colormaps reference. So I added Color Sequences as an example to fit with those.

Edit: I also recently find myself making a lot of use of the reference tag to find All The Options for a Thing.

Over the years I have made a lot of use of the other color reference examples...

Sure - those examples should probably also be moved/copied. The color docs that are in https://matplotlib.org/stable/users/explain/colors/index.html are just a dumb transfer of what used to be in a "colors" section of the tutorials. Ideally these reference materials would also move/be duplicated in the Users guide. It would be nice, however, if the User guide was actually comprehensive, and documenting core features was done there rather than slipped into the Gallery somewhere.

I also recently find myself making a lot of use of the reference tag to find All The Options for a Thing.

Indices are useful! Not sure if the tagging mechanism can work outside the Gallery, but if it could that would be great.

BTW, I put this in as an issue not to overlap with #30065, but will actually make a PR when that is finished.

I think everything in the Colormaps reference example is already duplicated in the Choosing colormaps part of the User Guide. However, because the User Guide page has all the discussion, you have to do a fair bit of scrolling if you really just want to see which string gives you which colours.

Indices are useful! Not sure if the tagging mechanism can work outside the Gallery, but if it could that would be great.

Piloted it on gallery to keep scope limited, but it should work on any page.