diff --git a/docs/ROADMAP.md b/docs/ROADMAP.md
index e7dcb69..add171c 100644
--- a/docs/ROADMAP.md
+++ b/docs/ROADMAP.md
@@ -350,5 +350,8 @@ how to override it. Items marked ✓ are shipped.
   dark. `stylix.nix` now sets `dconf` `org/gnome/desktop/interface
   color-scheme` = `prefer-light`/`prefer-dark` from `t.mode`
   (xdg-desktop-portal-gtk already ships, and `programs.dconf` is on
-  system-side), so libadwaita/Qt follow the palette. Needs a live session
-  to confirm the portal picks it up for all apps.
+  system-side), so libadwaita/Qt follow the palette. Confirmed in a live
+  session (headless QEMU): the portal's `org.freedesktop.appearance`
+  `color-scheme` reads `1` on a dark theme and flips to `2` after switching
+  to a light one (catppuccin-latte) — so xdg-desktop-portal-gtk does relay
+  the dconf value GTK4/Qt apps read.