Try 2: Completely redo how themes are stored on disk and processed at install time.

chrome/browser/cocoa/download_shelf_controller.mm

 // Copyright (c) 2009 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/cocoa/download_shelf_controller.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/mac_util.h"
 #include "base/sys_string_conversions.h"
@@ skipping 96 matching lines @@
 // Adapt appearance to the current theme. Called after theme changes and before
 // this is shown for the first time.
 - (void)updateTheme:(GTMTheme*)theme {
   // For the default theme, use a blue color for the link. Ideally, we'd want to
   // compare the current theme id with kDefaultThemeID, but the classic theme
   // from the gallery does have a different id. Hence, we use the blue color if
   // the current theme does not change the bookmark text color.
   BOOL useDefaultColor = YES;
   if (bridge_.get() && bridge_->browser() && bridge_->browser()->profile()) {
     ThemeProvider* provider = bridge_->browser()->profile()->GetThemeProvider();
-    if (provider)
+    if (provider) {
       useDefaultColor = provider->GetColor(
           BrowserThemeProvider::COLOR_BOOKMARK_TEXT) ==
-          BrowserThemeProvider::kDefaultColorBookmarkText;
+          BrowserThemeProvider::GetDefaultColor(
+              BrowserThemeProvider::COLOR_BOOKMARK_TEXT);
+    }
   }
 
   NSColor* color = useDefaultColor ?
       [HyperlinkButtonCell defaultTextColor] :
       [theme textColorForStyle:GTMThemeStyleBookmarksBarButton
                          state:GTMThemeStateActiveWindow];
   [showAllDownloadsCell_ setTextColor:color];
 }
 
 - (AnimatableView*)animatableView {
@@ skipping 167 matching lines @@
     if (isTransferDone &&
         [itemController download]->safety_state() != DownloadItem::DANGEROUS) {
       [self remove:itemController];
     } else {
       ++i;
     }
   }
 }
 
 @end