Update app.py

app.py

@@ -113,17 +113,8 @@ topics = """
 - Sustainability
 """
 
-ui.Theme(
-    name='<brown>',
-    primary='#967b62',
-    text='#4d3418',
-    card='#e6c5c5',
-    page='#bd8e8e',
-)
-
-
 # Setup the Gradio Blocks interface with custom layout components
-with gr.Blocks(theme='brown') as demo:
+with gr.Blocks(theme='gradio/seafoam') as demo:
     gr.Markdown(welcome_message)  # Display the formatted welcome message
     with gr.Row():
         with gr.Column():