From 6dbb3761f960b591769bf0253a20c76e4d57b9d7 Mon Sep 17 00:00:00 2001
From: Tim Hoffmann <2836374+timhoffm@users.noreply.github.com>
Date: Tue, 5 Nov 2024 19:17:02 +0100
Subject: [PATCH] Backport PR #29081: Document "none" as color value

---
 galleries/users_explain/colors/colors.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/galleries/users_explain/colors/colors.py b/galleries/users_explain/colors/colors.py
index 9b6a3832b75c..c91a5fcb0dbe 100644
--- 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/