force dark mode

app.py

@@ -3,7 +3,18 @@ from PIL import Image
 import cv2
 import numpy as np
 
-with gr.Blocks() as demo:
+js_func = """
+function refresh() {
+    const url = new URL(window.location);
+
+    if (url.searchParams.get('__theme') !== 'dark') {
+        url.searchParams.set('__theme', 'dark');
+        window.location.href = url.href;
+    }
+}
+"""
+
+with gr.Blocks(js=js_func) as demo:
 
     with gr.Row():
         color_map = gr.Image(value='color_map.png', scale=3, type='pil',