diff --git a/docs/ROADMAP.md b/docs/ROADMAP.md
index e3497c5..b1d181e 100644
--- a/docs/ROADMAP.md
+++ b/docs/ROADMAP.md
@@ -88,6 +88,25 @@ how to override it. Items marked ✓ are shipped.
   green inputbar, yellow bottom-border). Remaining: author `.rasi`
   identities for the other four ported themes if/when they want one (the
   generated palette theme is the default and looks fine)
+- **Visual theme picker (preview thumbnails):** replace the plain-text theme
+  list in `nomarchy-menu theme` with a rofi **icon grid of real desktop
+  previews** — each theme shown as a screenshot of its themed desktop (waybar
+  + a floating terminal), name beneath, the active theme marked, with the
+  `↩ Back` entry. **Workflow:** Bernardo captures the previews on real
+  hardware and commits them as `themes/<slug>/preview.png`; a build-time
+  derivation downscales each to a small thumbnail (imagemagick), and the
+  picker loads it as the rofi element icon — rofi already renders image files,
+  which is how the Papirus menu icons work, so a `.png` path in the icon slot
+  Just Works. Grid layout via a per-invocation `-theme-str` (`listview {
+  columns; }` + a larger `element-icon`). Graceful fallback when a theme has
+  no `preview.png` yet: its wallpaper (`backgrounds/`), an accent swatch, or
+  the plain name — so it degrades cleanly as previews are added incrementally.
+  (A headless VM-render route — `runNixOSTest` + software-GL Hyprland
+  (`LIBGL_ALWAYS_SOFTWARE` on virtio-gpu) + `machine.screenshot()` QMP
+  framebuffer dump — was prototyped 2026-06-19 and **works** (themed waybar
+  rendered + captured); real-hardware capture was chosen for fidelity +
+  simplicity, with the VM route as a documented fallback if hand-capturing all
+  themes gets tedious.)
 - **Faster switches:** move `backgrounds/` out of the flake source (the 86 MB
   re-copy on every state write is the main eval tax), then pre-built theme
   variants if still needed