diff --git a/styles/components/try-operation.less b/styles/components/try-operation.less
index 486be7c3d04..03514386d75 100644
--- a/styles/components/try-operation.less
+++ b/styles/components/try-operation.less
@@ -123,6 +123,9 @@
     .request {
       .raw-request {
       }
+      .form-control {
+        color: @gray-dk !important;
+      }
     }
 
     .response {