Neutral chat background for colour tags; answer Claude Code's AskUserQuestion with the question card

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

web/src/styles.css

@@ -600,9 +600,6 @@ button.session-group:hover {
   background: color-mix(in srgb, var(--tag) 38%, var(--bg1));
   border-color: color-mix(in srgb, var(--tag) 70%, transparent);
 }
-.chat-pane[data-color] .msg.bubble.agent {
-  background: color-mix(in srgb, var(--tag) 7%, var(--bg1));
-}
 @media (max-width: 700px) {
   .msg.user-msg {
     max-width: 94%;
@@ -4758,15 +4755,10 @@ span.chat-tab > button {
   }
 }
 
-.chat-pane[data-color] {
-  background: color-mix(in srgb, var(--tag) 16%, var(--bg0));
-}
-.chat-pane[data-color] .composer-wrap {
-  background: color-mix(in srgb, var(--tag) 16%, var(--bg0));
-}
+/* The chat's colour marks the top bar (line), the list entry, the badge and your own bubbles –
+ * the chat background itself stays neutral. */
 .topbar[data-color] {
   border-bottom: 3px solid var(--tag);
-  background: color-mix(in srgb, var(--tag) 28%, var(--bg0));
 }
 .session-item[data-color] {
   box-shadow: inset 4px 0 0 var(--tag);

web/src/whatsnew.ts

@@ -3,6 +3,10 @@
  * under "unreleased"; scripts/release.sh renames the key to the release version.
  */
 export const WHATS_NEW: Record<string, { en: string[]; de: string[] }> = {
+  unreleased: {
+    en: ["The chat colour no longer tints the chat background", "Claude Code can ask you questions again (question card in the chat)"],
+    de: ["Die Chat-Farbe färbt den Hintergrund des Chats nicht mehr ein", "Claude Code kann dir wieder Fragen stellen (Fragenkarte im Chat)"],
+  },
   "202611-00038": {
     en: ["Sidebar chat menu: Delete added; colour and icon are now chosen in the chat's own menu"],
     de: ["Chat-Menü in der Sidebar: Löschen hinzugefügt; Farbe und Icon wählst du jetzt im Menü des Chats"],