fix: text color update to neutral_hue

app.py

@@ -110,11 +110,11 @@ css = """
 """
 
 theme = gr.themes.Default(
-    text_color="white",
     spacing_size="sm",
     font=[gr.themes.GoogleFont("Plus Jakarta Sans"), "Arial", "sans-serif"],
     primary_hue="indigo",
-    secondary_hue="purple"
+    secondary_hue="purple",
+    neutral_hue="white",
 ).set(
     background_fill_primary="radial-gradient(circle at 90% 0%, rgba(255,255,255,0.15), #000000 25%)")