diff --git a/ement-taxy.el b/ement-taxy.el
index 5bc66a1..34c6730 100644
--- a/ement-taxy.el
+++ b/ement-taxy.el
@@ -575,6 +575,7 @@ left."
 
 (define-derived-mode ement-taxy-mode magit-section-mode "Ement-Taxy"
   :global nil
+  ;; FIXME: Initialize `ement-room-list-timestamp-colors' here.
   (setq-local bookmark-make-record-function #'ement-taxy-bookmark-make-record
               revert-buffer-function #'ement-taxy-revert))