Update app.py

app.py

@@ -118,16 +118,16 @@ css = """
     font-family: Arial, sans-serif;
 }
 button {
-    background-color: #1B5E20 !important;
+    background-color: #800080 !important;
     color: white !important;
     border: none !important;
 }
 button:hover {
-    background-color: #2E7D32 !important;
+    background-color: #990099 !important;
 }
 #title-header {
-    background-color: #1B5E20;
-    color: white;
+    background-color: #800080;
+    color: black;
     padding: 20px;
     border-radius: 8px;
     text-align: center;