default to striped background

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@26555 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/carbon/frame.cpp

@@ -74,8 +74,6 @@ bool wxFrame::Create(wxWindow *parent,
     if ( !wxTopLevelWindow::Create(parent, id, title, pos, size, style, name) )
         return FALSE;
     
-    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE));
-
     wxModelessWindows.Append(this);
     
     return TRUE;