diff --git a/Themes/BasicBackground/BasicBackground.css b/Themes/BasicBackground/BasicBackground.css
index 1820224304..7b3a365fb0 100644
--- a/Themes/BasicBackground/BasicBackground.css
+++ b/Themes/BasicBackground/BasicBackground.css
@@ -1096,9 +1096,11 @@ body::after {
 .mouse-mode.full-motion .message-2qnXI6.cozy-3raOZG:hover .iconContainer-3GkGRf::after {
 	border-right-color: rgba(var(--transparencycolor), calc(var(--messagetransparency) * 1.2));
 }
-#app-mount .ephemeral-1PsL1r.cozy-3raOZG .header-23xsNx::after,
-#app-mount .replying-1x3H0T.cozy-3raOZG .header-23xsNx::after,
 #app-mount .mentioned-xhSam7.cozy-3raOZG .header-23xsNx::after {
+	border-right-color: rgba(var(--mentioncolor), calc(var(--messagetransparency) * 100000000000000000000000000000));
+}
+#app-mount .ephemeral-1PsL1r.cozy-3raOZG .header-23xsNx::after,
+#app-mount .replying-1x3H0T.cozy-3raOZG .header-23xsNx::after {
 	border-right-color: rgba(var(--accentcolor), calc(var(--messagetransparency) * 100000000000000000000000000000));
 }
 .message-2DieIs,