Use the NativeTheme to create the text color for text during the generated card animation.

chrome/browser/ui/views/autofill/autofill_dialog_views.cc

Index: chrome/browser/ui/views/autofill/autofill_dialog_views.cc
diff --git a/chrome/browser/ui/views/autofill/autofill_dialog_views.cc b/chrome/browser/ui/views/autofill/autofill_dialog_views.cc
index 01a6cad2a21f3aa0d414558360f5c2f04fb7b733..ddb0d72c00822d8dcc18998dac8b00afa7d6caf2 100644
--- a/chrome/browser/ui/views/autofill/autofill_dialog_views.cc
+++ b/chrome/browser/ui/views/autofill/autofill_dialog_views.cc
@@ -35,6 +35,7 @@
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/animation/animation_delegate.h"
 #include "ui/gfx/canvas.h"
+#include "ui/gfx/color_utils.h"
 #include "ui/gfx/path.h"
 #include "ui/gfx/point.h"
 #include "ui/gfx/skia_util.h"
@@ -578,7 +579,8 @@ int AutofillDialogViews::OverlayView::GetHeightForContentsForWidth(int width) {
 }
 
 void AutofillDialogViews::OverlayView::UpdateState() {
-  const DialogOverlayState& state = delegate_->GetDialogOverlay();
+  const DialogOverlayState& state =
+      delegate_->GetDialogOverlay(GetNativeTheme());
 
   if (state.image.IsEmpty()) {
     SetVisible(false);
@@ -654,10 +656,20 @@ void AutofillDialogViews::OverlayView::OnPaint(gfx::Canvas* canvas) {
     arrow.close();
 
     SkPaint paint;
-    paint.setColor(kShadingColor);
+    SkColor background_color = background()->get_color();
+    int background_luminance =
+        color_utils::GetLuminanceForColor(background_color);
+    int background_alpha = static_cast<int>(
+        7 + 15 * (255 - background_luminance) / 255);
+    int subtle_border_alpha = static_cast<int>(
+        10 + 20 * (255 - background_luminance) / 255);
+
+    paint.setColor(color_utils::BlendTowardOppositeLuminance(
+        background_color, background_alpha));
     paint.setStyle(SkPaint::kFill_Style);
     canvas->DrawPath(arrow, paint);
-    paint.setColor(kSubtleBorderColor);
+    paint.setColor(color_utils::BlendTowardOppositeLuminance(
+        background_color, subtle_border_alpha));
     paint.setStyle(SkPaint::kStroke_Style);
     canvas->DrawPath(arrow, paint);
   }