1.0.1.4 updated the theme to soft with primary hue sky, updated the save button as primary.

app.py

@@ -20,7 +20,7 @@ def init_app():
 
 with gr.Blocks(
     css="footer {visibility: hidden}",
-    theme='JohnSmith9982/small_and_pretty',
+    theme=gr.themes.Soft(primary_hue="sky"),
     title="Billing"
     ) as ui:
 
@@ -36,7 +36,7 @@ with gr.Blocks(
 
     with gr.Row():
         payment_reset_button = gr.Button("Reset")
-        payment_save_button = gr.Button("Save")
+        payment_save_button = gr.Button("Save",variant="primary")
 
     gr.HTML("<h2>Invoices List</h2>")
     invoices_table = gr.DataFrame(