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 b024d1509878e1be274e1e5baa5b780d0e6a3621..0fbe791f84e2f2bc5dc0cc7c53a08945c3c08bda 100644
--- a/chrome/browser/ui/views/frame/glass_browser_frame_view.cc
+++ b/chrome/browser/ui/views/frame/glass_browser_frame_view.cc
@@ -555,7 +555,10 @@ 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(