diff --git a/media/css/seahub.css b/media/css/seahub.css
index d05fb8e0fb..e5b9b26912 100644
--- a/media/css/seahub.css
+++ b/media/css/seahub.css
@@ -1150,7 +1150,7 @@ textarea:-moz-placeholder {
     margin-top: 10px;
 }
 .msg-list button.op {
-    color: #2a2;
+    color: #4b4;
 }
 .msg {
     word-wrap: break-word;