Change default frame colors. Change custom titlebar colors on Windows.

chrome/browser/ui/views/frame/glass_browser_frame_view.cc

Index: chrome/browser/ui/views/frame/glass_browser_frame_view.cc
diff --git a/chrome/browser/ui/views/frame/glass_browser_frame_view.cc b/chrome/browser/ui/views/frame/glass_browser_frame_view.cc
index 9362e6133e066e7cbcaa000ef8787c73a2d61e0c..98a5035f1729ced68d5b225a45fac06c0177bf1b 100644
--- a/chrome/browser/ui/views/frame/glass_browser_frame_view.cc
+++ b/chrome/browser/ui/views/frame/glass_browser_frame_view.cc
@@ -556,7 +556,10 @@ bool GlassBrowserFrameView::ShowSystemIcon() const {
 }
 
 SkColor GlassBrowserFrameView::GetTitlebarColor() const {
-  return GetThemeProvider()->GetColor(ThemeProperties::COLOR_FRAME);
+  const ui::ThemeProvider* tp = GetThemeProvider();
+  return ShouldPaintAsActive()
+             ? tp->GetColor(ThemeProperties::COLOR_FRAME)
+             : tp->GetColor(ThemeProperties::COLOR_FRAME_INACTIVE);
 }
 
 Windows10CaptionButton* GlassBrowserFrameView::CreateCaptionButton(