hint-class="text-error" and icon-class="text-error" named a Tailwind utility Tailwind never generates: its content scanner does not read tests/Browser/*.php, so a class used only in a route fixture there never makes it into the built CSS, and the assertion compared two unstyled defaults that happen to differ rather than two error-coloured elements. md-ink-error is a real, always-present class (text.css) for exactly this "an application's own colour" case group.blade.php's own comment already recommends (plan step 36, closing the full run). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9