From 98f94707acad0315d9de40808dd5cd0bec72e2ab Mon Sep 17 00:00:00 2001
From: Maribeth Bottorff <maribethb@google.com>
Date: Wed, 8 Dec 2021 18:17:19 -0800
Subject: [PATCH] fix: allow undefined color in toolbox definition (#5801)

---
 core/toolbox/category.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/toolbox/category.js b/core/toolbox/category.js
index 04430653d..286be4011 100644
--- a/core/toolbox/category.js
+++ b/core/toolbox/category.js
@@ -424,7 +424,7 @@ ToolboxCategory.prototype.parseColour_ = function(colourValue) {
   // Decode the colour for any potential message references
   // (eg. `%{BKY_MATH_HUE}`).
   const colour = parsing.replaceMessageReferences(colourValue);
-  if (colour === null || colour === '') {
+  if (colour == null || colour === '') {
     // No attribute. No colour.
     return '';
   } else {