diff --git a/src/Testing/DesignGuard.php b/src/Testing/DesignGuard.php
index 089508c4..2532a745 100644
--- a/src/Testing/DesignGuard.php
+++ b/src/Testing/DesignGuard.php
@@ -387,7 +387,7 @@ class DesignGuard
 
                 if (preg_match_all($this->colourPattern(), $text, $matches)) {
                     foreach ($matches[0] as $class) {
-                        $violations[] = "{$where}:{$line} colour the theme does not declare `{$class}`";
+                        $violations[] = "{$where}:{$line} Tailwind palette colour `{$class}` compiles to nothing — M3 paints with roles: an `md-ink-*` class, or `var(--md-sys-color-*)` in your own CSS";
                     }
                 }
 
diff --git a/tests/Feature/DesignGuardTest.php b/tests/Feature/DesignGuardTest.php
index 0062554b..084c7bed 100644
--- a/tests/Feature/DesignGuardTest.php
+++ b/tests/Feature/DesignGuardTest.php
@@ -22,7 +22,7 @@ it('finds what compiles to nothing', function () {
     $violations = DesignGuard::scan([realpath(GUARD_FIXTURES.'/app'), realpath(GUARD_FIXTURES.'/views')])->violations();
 
     expect(fixtureRelative($violations))->toBe([
-        'app/Status.php:14 colour the theme does not declare `text-red-500`',
+        'app/Status.php:14 Tailwind palette colour `text-red-500` compiles to nothing — M3 paints with roles: an `md-ink-*` class, or `var(--md-sys-color-*)` in your own CSS',
         'views/page.blade.php:2 Tailwind spacing utility `p-4` compiles to nothing — use `padding="space200"` (16px) on `<x-surface>`, or `var(--md-sys-measurement-space200)` in your own CSS',
         'views/page.blade.php:6 Tailwind colour utility `text-tertiary` compiles to nothing — use `var(--md-sys-color-tertiary)` in your own CSS',
         'views/page.blade.php:6 1.x utility `focus-ring` compiles to nothing — use `md-focus-ring` (interaction.css)',
@@ -30,7 +30,7 @@ it('finds what compiles to nothing', function () {
         'views/page.blade.php:3 unknown Material Symbol `o-home`',
         'views/page.blade.php:4 unknown Material Symbol `not_a_symbol`',
         'views/page.blade.php:8 Blade directive `@class` inside a component tag, where it does not compile',
-        'views/page.blade.php:5 colour the theme does not declare `text-red-600`',
+        'views/page.blade.php:5 Tailwind palette colour `text-red-600` compiles to nothing — M3 paints with roles: an `md-ink-*` class, or `var(--md-sys-color-*)` in your own CSS',
     ]);
 });
 
diff --git a/tests/Fixtures/design-guard/stylesheets/views/plain.blade.php b/tests/Fixtures/design-guard/stylesheets/views/plain.blade.php
index 62001bb4..da3f9bc7 100644
--- a/tests/Fixtures/design-guard/stylesheets/views/plain.blade.php
+++ b/tests/Fixtures/design-guard/stylesheets/views/plain.blade.php
@@ -1 +1,3 @@
 <div>Nothing package-specific here.</div>
+<x-dynamic-component :component="$name" />
+<x-slot:title>Title</x-slot:title>