Update app.py

app.py

@@ -55,6 +55,7 @@ demo = gr.Interface(
     inputs=[carat_input, shape_input, cut_input, color_input, 
             clarity_input, report_input, type_input],
     outputs=model_output,
+    theme=gr.themes.Soft(),
     title="Diamond Price Predictor",
     description="This API allows you to predict the price of a diamond given its attributes",
     allow_flagging="auto",