Colour buttons

app.py

@@ -259,9 +259,9 @@ with gr.Blocks() as demo:
     chatbot = gr.Chatbot(label="Chat", type="messages")
     msg = gr.Textbox(label="Your message", placeholder="Enter clinical input...", show_label=False)
     with gr.Row():
-        submit_btn = gr.Button("Submit")
-        clear = gr.Button("Clear")
-
+        submit_btn = gr.Button("Submit", variant="primary")
+        clear_btn = gr.Button("Clear", variant="secondary")
+        
     def resolve_model_choice(mode, dropdown_value, textbox_value):
         return textbox_value.strip() if mode == "Enter custom model" else dropdown_value