diff --git a/src/apps/drama/models.py b/src/apps/drama/models.py
index 97c4ed5..3eba88c 100644
--- a/src/apps/drama/models.py
+++ b/src/apps/drama/models.py
@@ -293,21 +293,31 @@ class Note(models.Model):
             post.title = NOTE_UNLOCK_POST_TITLE
             post.save(update_fields=["title"])
 
-        username = user.username or user.email
+        # Bare-email fallback when user.username is None (no `@` prefix —
+        # the address already carries one). When username is set, use the
+        # `@handle` form. Both wrapped in .post-attribution so the CSS
+        # palette key (--quaUser) lights up the username + title combo.
+        handle = f"@{user.username}" if user.username else user.email
         note_anchor = (
             f'<a class="note-ref" href="/billboard/my-notes/">'
             f'{note.display_name}</a>'
         )
+        attr_handle = f'<span class="post-attribution">{handle}</span>'
+        attr_title  = f'<span class="post-attribution">{note.display_title}</span>'
         if slug in _ADMIN_NOTE_SLUGS:
             line_text = (
-                f"The administration recognizes {username} for {note_anchor}, "
-                f"which comes with the customary title of {note.display_title}. "
+                f"The administration recognizes {attr_handle} for {note_anchor}, "
+                f"which comes with the customary title of {attr_title}. "
                 "This does not entail any additional benefits."
             )
         else:
+            attr_combo = (
+                f'<span class="post-attribution">{handle} '
+                f'the {note.display_title}</span>'
+            )
             line_text = (
                 f"Look!—new Note unlocked. {note_anchor} "
-                f"recognizes {username} the {note.display_title}."
+                f"recognizes {attr_combo}."
             )
 
         # Lazy get-or-create: TransactionTestCase flushes the migration-seeded
diff --git a/src/apps/lyric/templatetags/lyric_extras.py b/src/apps/lyric/templatetags/lyric_extras.py
index fe8c5bd..88169c7 100644
--- a/src/apps/lyric/templatetags/lyric_extras.py
+++ b/src/apps/lyric/templatetags/lyric_extras.py
@@ -48,3 +48,16 @@ def display_name(user):
     if user.username:
         return user.username
     return truncate_email(user.email)
+
+
+@register.filter
+def at_handle(user):
+    """`@username` when the user has set one; falls back to the truncated
+    email otherwise (no `@` prefix on bare emails since the address itself
+    already carries the `@`). Used in post.html to colour usernames in the
+    --quaUser palette key while leaving emails as-is."""
+    if user is None:
+        return ""
+    if user.username:
+        return f"@{user.username}"
+    return truncate_email(user.email)
diff --git a/src/static_src/scss/_billboard.scss b/src/static_src/scss/_billboard.scss
index 76a720c..a4ef689 100644
--- a/src/static_src/scss/_billboard.scss
+++ b/src/static_src/scss/_billboard.scss
@@ -130,6 +130,14 @@ body.page-billposts {
     padding: 0.75rem;
     gap: 0.5rem;
 
+    // Username + title attribution spans — line author column, self/shared
+    // header lines, server-rendered grant prose. --quaUser palette key
+    // unifies them across the page; placed at .post-page scope so it
+    // applies in BOTH .post-header and #id_post_table descendants.
+    .post-attribution {
+        color: rgba(var(--quaUser), 1);
+    }
+
     .post-header {
         flex-shrink: 0;
 
@@ -169,7 +177,7 @@ body.page-billposts {
 
             .post-line-author {
                 font-weight: bold;
-                opacity: 0.75;
+                color: rgba(var(--quaUser), 1);
                 white-space: nowrap;
                 font-size: 0.85rem;
             }
diff --git a/src/templates/apps/billboard/post.html b/src/templates/apps/billboard/post.html
index 5a00487..c830fc0 100644
--- a/src/templates/apps/billboard/post.html
+++ b/src/templates/apps/billboard/post.html
@@ -16,10 +16,10 @@
         <h3 class="post-title">{{ post.title }}</h3>
         {% with recipients=post.shared_with.all %}
             {% if recipients %}
-                <p class="post-shared-recipients">shared between {% for r in recipients %}<span class="post-recipient">{{ r|display_name }}</span>{% if not forloop.last %}, {% endif %}{% endfor %}</p>
-                <p class="post-shared-self">&amp; me, {{ post.owner|display_name }} the {{ post.owner.active_title_display }}</p>
+                <p class="post-shared-recipients">shared between {% for r in recipients %}<span class="post-recipient post-attribution">{{ r|at_handle }}</span>{% if not forloop.last %}, {% endif %}{% endfor %}</p>
+                <p class="post-shared-self">&amp; me, <span class="post-attribution">{{ post.owner|at_handle }} the {{ post.owner.active_title_display }}</span></p>
             {% else %}
-                <p class="post-shared-self">just me, {{ post.owner|display_name }} the {{ post.owner.active_title_display }}</p>
+                <p class="post-shared-self">just me, <span class="post-attribution">{{ post.owner|at_handle }} the {{ post.owner.active_title_display }}</span></p>
             {% endif %}
         {% endwith %}
     </header>
@@ -27,7 +27,7 @@
     <ul id="id_post_table" class="post-lines">
         {% for line in post.lines.all %}
             <li class="post-line {% if line.author.username == 'adman' %}post-line--system{% endif %}">
-                <span class="post-line-author">{{ line.author|display_name }}</span>
+                <span class="post-line-author">{{ line.author|at_handle }}</span>
                 <span class="post-line-text">{# adman-authored Lines (note unlock + share invite system prose) carry an `<a class="note-ref">` anchor that needs to render as HTML. User-typed Lines stay escaped. #}{% if line.author.username == 'adman' %}{{ line.text|safe }}{% else %}{{ line.text }}{% endif %}</span>
                 <time class="post-line-time" datetime="{{ line.created_at|date:'c' }}">{{ line.created_at|date:'g:i A' }}</time>
             </li>