Update app.py

app.py

@@ -112,17 +112,21 @@ def colorize(img):
   unique_imgfilename = str(uuid.uuid4()) + '.png'
   cv2.imwrite(unique_imgfilename, image_out)
   return (img, unique_imgfilename)
-
+    
+def clear_images():
+    return None, None
 
 # Gradio demo using the Image-Slider custom component
-with gr.Blocks() as demo:
+with gr.Blocks(theme="dark") as demo:
   with gr.Row():
     with gr.Column():
       bw_image = gr.Image(label='Black and White Input Image')
       btn = gr.Button('Convert')
+      clear = gr.Button("Clear")
     with gr.Column():
       col_image_slider =ImageSlider(position=0.5,
                                      label='Colored Image with Slider-view')
 
   btn.click(colorize, bw_image, col_image_slider)
+  clear.click(clear_images, outputs=[bw_image, col_image_slider])
 demo.launch()