From 9b9a5acf89b8290a32cf3dfc56437a348b7c941a Mon Sep 17 00:00:00 2001
From: Will McGugan <willmcgugan@gmail.com>
Date: Tue, 13 Sep 2022 12:03:18 +0100
Subject: [PATCH] docstrings

---
 src/textual/color.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/textual/color.py b/src/textual/color.py
index 4fc9186b5..ae92fad2c 100644
--- a/src/textual/color.py
+++ b/src/textual/color.py
@@ -295,7 +295,8 @@ class Color(NamedTuple):
 
         Args:
             destination (Color): Another color.
-            factor (float): A blend factor, 0 -> 1
+            factor (float): A blend factor, 0 -> 1.
+            alpha (float | None): New alpha for result. Defaults to 1.
 
         Returns:
             Color: A new color.