diff --git a/toolkit/themes/shared/tree/tree.css b/toolkit/themes/shared/tree/tree.css
index cb973533858e82a7c57097343b9a21083eba4b1c..35331dde1d6ee56932c0142a489151d1a4dc4635 100644
--- a/toolkit/themes/shared/tree/tree.css
+++ b/toolkit/themes/shared/tree/tree.css
@@ -12,6 +12,7 @@
 /* ::::: tree ::::: */
 
 tree {
+  --color-accent-primary: var(--zen-primary-color, inherit);
   margin: 0 4px;
   background-color: Field;
   color: FieldText;
