Backport PR matplotlib#29081: Document "none" as color value

timhoffm · meeseeksmachine · commit 6dbb3761f960 · 2024-11-05T18:17:25.000Z
diff --git a/galleries/users_explain/colors/colors.py b/galleries/users_explain/colors/colors.py
@@ -73,6 +73,10 @@
 |                                      |                                      |
 | .. versionadded:: 3.8                |                                      |
 +--------------------------------------+--------------------------------------+
+| The special value "none" is fully    | - ``'none'``                         |
+| transparent, i.e. equivalent to a    |                                      |
+| RGBA value ``(0.0, 0.0, 0.0, 0.0)``  |                                      |
++--------------------------------------+--------------------------------------+
 
 .. _xkcd color survey: https://xkcd.com/color/rgb/
 
