diff --git a/src/app.cpp b/src/app.cpp
index e0aaae4..a7a08b2 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -3425,7 +3425,9 @@ void App::renderShutdownScreen()
     ImGui::SetNextWindowPos(vp_pos);
     ImGui::SetNextWindowSize(vp_size);
     ImGui::SetNextWindowFocus();
-    ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(0.06f, 0.06f, 0.08f, 0.92f));
+    // Shared overlay-scrim tone (matches dialog backdrops); the shutdown screen stays an opaque
+    // scrim (no blur) so it reads as "closing", not a modal over your work.
+    ImGui::PushStyleColor(ImGuiCol_WindowBg, OverlayScrimColor(0.92f));
     ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
     ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0.0f);
     ImGuiWindowFlags shutdownFlags =
@@ -3464,7 +3466,7 @@ void App::renderShutdownScreen()
         ImGui::PushFont(Type().h5());
         ImVec2 ts = ImGui::CalcTextSize(title);
         ImGui::SetCursorPosX(cx - ts.x * 0.5f);
-        ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.0f, 0.85f, 0.0f, 1.0f));
+        ImGui::PushStyleColor(ImGuiCol_Text, ImGui::ColorConvertU32ToFloat4(Warning()));  // theme amber
         ImGui::TextUnformatted(title);
         ImGui::PopStyleColor();
         ImGui::PopFont();
@@ -3578,9 +3580,10 @@ void App::renderShutdownScreen()
             ImGui::CloseCurrentPopup();
         }
         ImGui::SameLine();
-        ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0.6f, 0.15f, 0.15f, 0.9f));
-        ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(0.75f, 0.2f, 0.2f, 1.0f));
-        ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(0.5f, 0.1f, 0.1f, 1.0f));
+        // Destructive action — theme error color (alpha-varied for hover/active) instead of hardcoded red.
+        ImGui::PushStyleColor(ImGuiCol_Button,        ImGui::ColorConvertU32ToFloat4(WithAlpha(Error(), 210)));
+        ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImGui::ColorConvertU32ToFloat4(Error()));
+        ImGui::PushStyleColor(ImGuiCol_ButtonActive,  ImGui::ColorConvertU32ToFloat4(WithAlpha(Error(), 160)));
         if (ImGui::Button(TR("force_quit_yes"), ImVec2(btnW, 0))) {
             DEBUG_LOGF("Force quit confirmed by user after %.0fs\n", shutdown_timer_);
             shutdown_complete_ = true;
diff --git a/src/ui/material/draw_helpers.h b/src/ui/material/draw_helpers.h
index f285f13..9325b92 100644
--- a/src/ui/material/draw_helpers.h
+++ b/src/ui/material/draw_helpers.h
@@ -1129,6 +1129,10 @@ inline int SegmentedControl(ImDrawList* dl, ImVec2 origin, float totalW, float h
 inline std::unordered_map<std::string, float> g_overlayCardHeights;
 inline std::string g_overlayCurrentKey;
 
+// The dark base color for any full-window overlay backdrop (dialog scrims + the shutdown screen),
+// so every overlay shares one backdrop tone. `opacity` is the alpha (dialogs vary it per call).
+inline ImVec4 OverlayScrimColor(float opacity) { return ImVec4(0.04f, 0.04f, 0.06f, opacity); }
+
 // Style of an overlay dialog. GlassCard = the classic scrim + glass card + boxed title bar.
 // BlurFloat = the "Manage Portfolio" look: live-blur backdrop + floating content + plain heading.
 enum class OverlayStyle { GlassCard, BlurFloat };
@@ -1173,7 +1177,7 @@ inline bool BeginOverlayDialog(const OverlayDialogSpec& spec)
     if (!overlayPopupOpen) ImGui::SetNextWindowFocus();
     // Blur overlays draw their own backdrop, so the window itself is transparent.
     ImGui::PushStyleColor(ImGuiCol_WindowBg,
-        blur ? ImVec4(0, 0, 0, 0) : ImVec4(0.04f, 0.04f, 0.06f, spec.scrimOpacity));
+        blur ? ImVec4(0, 0, 0, 0) : OverlayScrimColor(spec.scrimOpacity));
     ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
     ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0.0f);
     ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0, 0));