1 files changed, 1 insertions, 1 deletions
diff --git a/css/app.css b/css/app.css
index e3b96fc84..73ffe9957 100644
--- a/css/app.css
+++ b/css/app.css
@@ -22,7 +22,7 @@
 
 #undo {
     z-index:101;
-    background-color:#fc4;
+    background-color:var(--color-warning);
     border:0;
     padding:0 .7em .3em;
     display:none;