Update app.py

app.py

@@ -4,9 +4,9 @@ def generate(prompt):
     return None
 
 theme = gr.themes.Base(
-    primary_hue="grey",
-    secondary_hue="grey",
-    neutral_hue="grey",
+    primary_hue="gray",
+    secondary_hue="gray",
+    neutral_hue="gray",
     font=['Helvetica', 'ui-sans-serif', 'system-ui', 'sans-serif'],
 ).set(
     button_large_text_weight='400',