Update app.py

app.py

@@ -190,7 +190,7 @@ class Chatbot:
 
         """Create the Gradio interface for the Chemical Identifier."""
 
-        with gr.Blocks(css="style.css",theme=gr.themes.Soft()) as demo:
+        with gr.Blocks(css="style.css",theme="karthikeyan-adople/hudsonhays-gray") as demo:
           state = gr.State(self.get_empty_state())
           with gr.Column(elem_id="col-container"):
               gr.HTML(