Move theme and css to launch() — Gradio 6 ignores them on Blocks

app.py

@@ -214,7 +214,9 @@ CSS = """
 .dark .gradio-container { color: var(--body-text-color); }
 """
 
-with gr.Blocks(theme=gr.themes.Citrus(), css=CSS, title="Sprite Forge") as demo:
+# Gradio 6 moved `theme` and `css` off the Blocks constructor onto `launch()`; passing them here is only a warning,
+# so the theme silently does not apply.
+with gr.Blocks(title="Sprite Forge") as demo:
     with gr.Column(elem_id="col-container"):
         gr.Markdown(
             """
@@ -300,4 +302,10 @@ with gr.Blocks(theme=gr.themes.Citrus(), css=CSS, title="Sprite Forge") as demo:
     )
 
 if __name__ == "__main__":
-    demo.queue(default_concurrency_limit=4).launch(ssr_mode=False, show_error=True, allowed_paths=[OUTPUT_DIR])
+    demo.queue(default_concurrency_limit=4).launch(
+        theme=gr.themes.Citrus(),
+        css=CSS,
+        ssr_mode=False,
+        show_error=True,
+        allowed_paths=[OUTPUT_DIR],
+    )