diff --git a/static/styles/portico/integrations_dev_panel.css b/static/styles/portico/integrations_dev_panel.css
index 4c26e6ee48..f48e773933 100644
--- a/static/styles/portico/integrations_dev_panel.css
+++ b/static/styles/portico/integrations_dev_panel.css
@@ -1,8 +1,3 @@
-button {
-    background-color: hsl(152, 52%, 91%);
-    color: hsl(146, 50%, 36%);
-}
-
 #custom_http_headers {
     width: 100%;
     height: 60px;
@@ -16,9 +11,8 @@ button {
     padding-top: 20px;
     padding-left: 10px;
     padding-right: 10px;
-    background-color: hsl(173, 100%, 98%);
-    box-shadow: 8px 4px 8px 0 hsla(0, 0%, 0%, 0.2),
-        0 6px 20px 0 hsla(0, 0%, 0%, 0.19);
+    background-color: hsl(0deg 0% 100% / 48%);
+    box-shadow: 0 0 40px hsl(0deg 0% 0% / 6%);
 }
 
 #fixture_body {
diff --git a/templates/zerver/development/integrations_dev_panel.html b/templates/zerver/development/integrations_dev_panel.html
index 1b2c3dba9d..76fde940d6 100644
--- a/templates/zerver/development/integrations_dev_panel.html
+++ b/templates/zerver/development/integrations_dev_panel.html
@@ -91,8 +91,8 @@
             </div>
             <textarea id="fixture_body"></textarea>
             <div class="buttons">
-                <button id="send_all_fixtures_button">Send all</button>
-                <button id="send_fixture_button">Send!</button>
+                <button id="send_all_fixtures_button" class="btn btn-primary">Send all</button>
+                <button id="send_fixture_button" class="btn btn-primary">Send!</button>
             </div>
         </div>
         <div class="col1">