diff --git a/src/uncloseai-modal-builtin.css b/src/uncloseai-modal-builtin.css
index 323cebb..3b81df3 100644
--- a/src/uncloseai-modal-builtin.css
+++ b/src/uncloseai-modal-builtin.css
@@ -421,9 +421,9 @@ dialog#translate-modal {
 }
 
 .translate-tab-nav a[aria-selected="true"] {
-  background: #007bff;
+  background: #81c784;
   color: white;
-  border-color: #007bff;
+  border-color: #81c784;
 }
 
 /* Form elements */
diff --git a/src/uncloseai-modal-pico.css b/src/uncloseai-modal-pico.css
index 56d3cd9..3e255f5 100644
--- a/src/uncloseai-modal-pico.css
+++ b/src/uncloseai-modal-pico.css
@@ -464,9 +464,9 @@ dialog#translate-modal {
 }
 
 .translate-tab-nav a[aria-selected="true"] {
-  background: #007bff;
+  background: #81c784;
   color: white;
-  border-color: #007bff;
+  border-color: #81c784;
 }
 
 /* Form elements */