Update app.py

app.py

@@ -743,4 +743,4 @@ with gr.Blocks(title=TITLE) as demo:
     demo.queue(max_size=4).launch()
 
 if __name__ == "__main__":
-    demo.launch()
+    demo.launch(theme=gr.themes.Default(primary_hue="slate", secondary_hue="stone"))