matplotlib/matplotlib — pull request #2659 by endolith (2013-12-07 21:52:49+00:00)
Title: DOC: Remove redundant colormaps from examples

`gist_yarg`, `gist_gray`, and `binary` are identical to `gray`, so they are "on a deprecation path", and `spectral` was renamed to `nipy_spectral` to avoid conflicts with `Spectral`

https://github.com/matplotlib/matplotlib/pull/889