Update app.py

app.py

@@ -110,6 +110,7 @@ demo = gr.ChatInterface(
         block_title_background_fill_dark="#070d1b",
         input_background_fill_dark="#0c1425",
         button_secondary_background_fill_dark="#070d1b",
+        border_color_accent_dark="#21293b",
         border_color_primary_dark="#21293b",
         background_fill_secondary_dark="#0f172a",
         color_accent_soft_dark="transparent"