I really want to have this, so, it's a head start ( and example ) of coloring this control ( or part of it so far ) So don't be shy and pitch in   #include <EditConstants.au3> #include <GUIConstantsEx.au3> #include <GuiDateTimePicker.au3> #include <WindowsConstants.au3> #include <WinAPITheme.au3> #include <GuiMonthCal.au3> Global $g_hDTP1, $g_hDTP2, $g_idMemo Example() Func Example()