From a3024e14780249af35eb644a6cf10610987b1907 Mon Sep 17 00:00:00 2001
From: Natalie Weizenbaum <nweiz@google.com>
Date: Mon, 9 Oct 2023 15:44:24 -0700
Subject: [PATCH] Add support for relative color syntax

See sass/sass#3673
---
 lib/src/functions/color.dart | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/src/functions/color.dart b/lib/src/functions/color.dart
index 7edfc51dc..ee69e6896 100644
--- a/lib/src/functions/color.dart
+++ b/lib/src/functions/color.dart
@@ -1165,6 +1165,10 @@ Value _parseChannels(String functionName, Value input,
     case []:
       throw SassScriptException('Color component list may not be empty.', name);
 
+    case [SassString(:var text, hasQuotes: false), ...]
+        when text.toLowerCase() == "from":
+      return _functionString(functionName, [input]);
+
     case _ when components.isVar:
       channels = [components];