Update app.py

app.py

@@ -133,7 +133,8 @@ def upload_file(file_obj):
 
 
 def demo():
-    with gr.Blocks(theme=gr.themes.Default(primary_hue="sky")) as demo:
+    # with gr.Blocks(theme=gr.themes.Default(primary_hue="sky")) as demo:
+    with gr.Blocks(theme=gr.themes.Default(primary_hue="red", secondary_hue="pink", neutral_hue = "sky")) as demo:
         vector_db = gr.State()
         qa_chain = gr.State()
         gr.HTML("<center><h1>RAG PDF chatbot</h1><center>")