style(cover): change back cover quote colour to gold2

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

templates/cover.html

@@ -204,7 +204,7 @@
       font-style: italic;
       font-weight: 300;
       font-size: 0.118in;
-      color: var(--color-text);
+      color: var(--color-gold2);
       max-width: 60%;
       line-height: 1.6;
       text-shadow: 0 1px 6px rgba(0,0,0,1), 0 2px 16px rgba(0,0,0,1);