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

chrome/browser/ui/cocoa/autofill/autofill_overlay_controller.mm

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/ui/cocoa/autofill/autofill_overlay_controller.h"
 
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/ui/autofill/autofill_dialog_types.h"
@@ skipping 77 matching lines @@
 
 - (CGFloat)heightForWidth:(CGFloat)width {
   return NSHeight([label_ frame]) + autofill::kArrowHeight +
       2 * kOverlayLabelPadding;
 }
 
 - (void)setMessage:(const autofill::DialogOverlayString&)message {
   // We probably want to look at other multi-line messages somewhere.
   [label_ setFont:message.font.GetNativeFont()];
   [label_ setStringValue:base::SysUTF16ToNSString(message.text)];
-  [label_ setTextColor:gfx::SkColorToCalibratedNSColor(message.text_color)];
+  [label_ setTextColor:[NSColor darkGrayColor]];
 
   // Resize only height, preserve width. This guarantees text stays centered in
   // the dialog.
   NSSize labelSize = [label_ frame].size;
   labelSize.height = [[label_ cell] cellSize].height;
   [label_ setFrameSize:labelSize];
 
   [self setHidden:message.text.empty()];
 }
 
@@ skipping 68 matching lines @@
   [messageView_ setFrame:NSMakeRect(0, 0, NSWidth(bounds), messageHeight)];
   [messageView_ performLayout];
 
   NSSize imageSize = [[imageView_ image] size];
   [imageView_ setFrame:NSMakeRect(
        0, NSMaxY([messageView_ frame]) + kOverlayImageVerticalPadding,
        NSWidth(bounds), imageSize.height)];
 }
 
 @end