diff --git a/src/zen/common/styles/schemes/dark.inc.css b/src/zen/common/styles/schemes/dark.inc.css
index 032dd757d9..9b20f1a6a0 100644
--- a/src/zen/common/styles/schemes/dark.inc.css
+++ b/src/zen/common/styles/schemes/dark.inc.css
@@ -3,5 +3,4 @@
 % file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 color-scheme: dark;
---toolbar-color-scheme: dark;
 --zen-urlbar-outline-offset: -2px;
diff --git a/src/zen/common/styles/schemes/light.inc.css b/src/zen/common/styles/schemes/light.inc.css
index a3c18d0fd1..d010f2f193 100644
--- a/src/zen/common/styles/schemes/light.inc.css
+++ b/src/zen/common/styles/schemes/light.inc.css
@@ -3,5 +3,4 @@
 % file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 color-scheme: light;
---toolbar-color-scheme: light;
 --zen-urlbar-outline-offset: 0px;
diff --git a/src/zen/spaces/ZenGradientGenerator.mjs b/src/zen/spaces/ZenGradientGenerator.mjs
index e6d926bc7e..c4ebebf78c 100644
--- a/src/zen/spaces/ZenGradientGenerator.mjs
+++ b/src/zen/spaces/ZenGradientGenerator.mjs
@@ -1753,6 +1753,10 @@ export class nsZenThemePicker extends nsZenMultiWindowFeature {
           "--toolbox-textcolor",
           `rgba(${textColor[0]}, ${textColor[1]}, ${textColor[2]}, ${textColor[3]})`
         );
+        docElement.style.setProperty(
+          "--toolbar-color-scheme",
+          isDarkMode ? "dark" : "light"
+        );
       }
 
       if (!skipUpdate) {