Update app.py

app.py

@@ -116,8 +116,16 @@ def colorize(img):
 def clear_images():
     return None, None
 
+dark_theme = gr.themes.Default(
+    primary_hue="teal",
+    secondary_hue="gray",
+    neutral_hue="slate",
+).set(
+    body_background_fill="#000000"  # Set background to black
+)
+
 # Gradio demo using the Image-Slider custom component
-with gr.Blocks(theme="dark") as demo:
+with gr.Blocks(theme=dark_theme) as demo:
   with gr.Row():
     with gr.Column():
       bw_image = gr.Image(label='Black and White Input Image')