diff --git a/public/assets/css/theme-bthree-dark.css b/public/assets/css/theme-bthree-dark.css
index a6e7621..c2f3e54 100644
--- a/public/assets/css/theme-bthree-dark.css
+++ b/public/assets/css/theme-bthree-dark.css
@@ -214,6 +214,9 @@
   --color-footer: hsl(213, 14.8%, 21%);
   --color-footer-text: var(--color-text-light-3);
   --color-footer-links: var(--color-text-light-1);
+
+  /* Color aliases. */
+  --color-accent: var(--color-primary);
 }
 
 /* Custom styling of individual elements.