Update app.py

app.py

@@ -112,7 +112,7 @@ with gr.Blocks() as demo:
       bw_image = gr.Image(label='Black and White Input Image')
       btn = gr.Button('Convert using DDColor')
     with gr.Column():
-      col_image_slider = gr.ImageSlider(slider_position=0.5,
+      col_image_slider = gr.ImageSlider(slider_position=50,
                                      label='Colored Image with Slider-view')
 
   btn.click(colorize, bw_image, col_image_slider)