update theme colour

app.py

@@ -142,7 +142,7 @@ def record_input(id, turn, annotator, alignment, quality, consistency, overall):
 
 # Gradio Interface
 def create_interface():
-    with gr.Blocks(theme=gr.themes.Soft()) as demo:
+    with gr.Blocks(theme=gr.themes.Origin()) as demo:
         gr.Markdown(instruction_beginning)
 
         # annotator = gr.Textbox(label="Nickname", interactive=True)