Update app.py

app.py

@@ -167,6 +167,12 @@ window.addEventListener('load', () => {
 
 CSS="""
 <style>
+    :root{
+        --button-primary-border-color:#436588 !important;
+    	--button-primary-background-fill:#468ad0 !important;
+        --primary-600:#468ad0 !important
+    }
+
     .image-monitor {
         border:1px solid red;
     }