diff --git a/examples/chat/smoke/CHECKLIST.md b/examples/chat/smoke/CHECKLIST.md
index 24cd0e10..7a1190fa 100644
--- a/examples/chat/smoke/CHECKLIST.md
+++ b/examples/chat/smoke/CHECKLIST.md
@@ -136,6 +136,20 @@ renders correctly both during streaming and after completion.
- [ ] Palette never overlaps the chat input
- [ ] Palette stays above any popup/sidebar in z-order
+## Color scheme (Light / Dark)
+
+- [ ] Palette → APPEARANCE section shows a `Light` / `Dark` segmented control above the existing `Theme` dropdown
+- [ ] Default is `Dark` on first load
+- [ ] Toggle to `Light` — `` flips to `data-color-scheme="light"` and `data-ngaf-chat-theme="light"`
+- [ ] Page background flips to white; chat composition + sidenav backgrounds flip to light
+- [ ] A2UI surface text colors invert correctly (no white-on-white or black-on-black)
+- [ ] Toggle back to `Dark` — all of the above restore
+- [ ] When A2UI theme dropdown is on `default-dark` or `default-light`, it auto-syncs with the color scheme toggle
+- [ ] When A2UI theme is on a `material-*` preset, color scheme toggle does NOT change the A2UI theme (user override wins)
+- [ ] Selection persists across reload (`localStorage.ngaf-chat-demo:palette.colorScheme`)
+- [ ] No FOUC on initial load — inline `
` script reads the persisted value before bootstrap
+- [ ] No `console.error` on toggle
+
## Keyboard & accessibility
- [ ] Tab order reaches: input, send button, suggestions (when shown),
@@ -219,6 +233,9 @@ renders correctly both during streaming and after completion.
- [ ] After tool completes: card collapses to "complete" pill
- [ ] Click the card — args + result panels expand
- [ ] AI response references documents inline (e.g. "Signals are... [1]")
+- [ ] Tool call card name (`.tcc__name`) is rendered in `--ngaf-chat-text-muted` color and `font-size-sm` (NOT full-brightness text)
+- [ ] Tool call status pill (`.tcc__pill`) uses muted monochrome (`--ngaf-chat-text-muted`) regardless of status — NO saturated green/red for complete/error states
+- [ ] `` host has `margin-bottom >= 16px` so the next sibling (A2UI surface or markdown) has clear breathing room
## Interrupts / human-in-the-loop
@@ -328,9 +345,11 @@ Components NOT yet exercised by the demo (deferred to future media-focused sugge
## Sidenav (thread management)
- [ ] Left sidenav renders by default as a semantic `