Change MDI main windows bar color

I tryed with mainframe ... or  aCMFCVisualManagerWindows7 derived class

<pre>BOOL CCiVisualStyle::DrawTextOnGlass(CDC* pDC, CString strText, CRect rect, DWORD dwFlags, int nGlowSize, COLORREF clrText)
{
	// Zone de fichiers recents
	CBrush br(RGB(255, 255, 0));
	pDC->FillRect(rect, &br);

	return CMFCVisualManagerWindows7::DrawTextOnGlass(pDC, strText, rect, dwFlags, nGlowSize, RGB(0, 0, 0));
}