diff --git a/skrub/_reporting/_data/templates/_variables.css b/skrub/_reporting/_data/templates/_variables.css
index 48d4375af..37c8d56b0 100644
--- a/skrub/_reporting/_data/templates/_variables.css
+++ b/skrub/_reporting/_data/templates/_variables.css
@@ -75,8 +75,7 @@
     /* borders */
     --color-border-primary: #aaa;
     --color-border-secondary: #cbcbcb;
-    --color-border-highlight-primary: #84e184;
-    --color-border-highlight-secondary: #eafaea;
+    --color-border-highlight: #eafaea;
 
     /* shadows */
     --color-shadow: rgb(255, 255, 255, 0.5);
@@ -114,8 +113,7 @@
     /* borders */
     --color-border-primary: #666;
     --color-border-secondary: #444;
-    --color-border-highlight-primary: #2a9d8f;
-    --color-border-highlight-secondary: #264653;
+    --color-border-highlight: #264653;
 
     /* shadows */
     --color-shadow: rgba(0, 0, 0, 0.5);
diff --git a/skrub/_reporting/_data/templates/column-summaries.css b/skrub/_reporting/_data/templates/column-summaries.css
index bb35cdba6..b5458fcc9 100644
--- a/skrub/_reporting/_data/templates/column-summaries.css
+++ b/skrub/_reporting/_data/templates/column-summaries.css
@@ -123,12 +123,12 @@
   position: relative;
   background-color: var(--color-background-highlight-primary);
   border-block-end: var(--border-s) solid
-    var(--color-border-highlight-secondary);
+    var(--color-border-highlight);
   padding-right: 36px;
 }
 
 .columns-in-sample-tab .card {
-  border-color: var(--color-border-highlight-secondary);
+  border-color: var(--color-border-highlight);
 }
 
 /* Button for closing the card / deselecting the column in the table */