Fix hardcoded palette color in catalog maintenance page (admin theme audit)

src/app/admin/catalog/maintenance/page.tsx

@@ -236,7 +236,7 @@ export default function CatalogMaintenancePage() {
 								New items to insert: <b>{alignPreview.inserted}</b>
 							</div>
 							{alignPreview.skipped.length > 0 && (
-								<div className="mt-1 text-amber-600">
+								<div className="mt-1 text-muted-foreground">
 									Skipped (id occupied): {alignPreview.skipped.join(", ")}
 								</div>
 							)}