Sets the color for a given portion of the month calendar
#include <GuiDateTimePicker.au3>
_GUICtrlDTP_SetMCColor ( $hWnd, $iIndex, $iColor )
| $hWnd | Handle to the control | 
| $iIndex | Indicates which month calendar color to set: 0 - Background color displayed between months 1 - Color used to display text within a month 2 - Background color displayed in the calendar title 3 - Color used to display text within the calendar title 4 - Background color displayed within the month 5 - Color used to display header day and trailing day text | 
| $iColor | The color that will be set for the specified area | 
| Success: | the previous color for the given portion. | 
| Failure: | -1. | 
#include "Extras\HelpFileInternals.au3"
#include <ColorConstants.au3>
#include <GUIConstantsEx.au3>
#include <GuiDateTimePicker.au3>
Example() ;use autoit built-in control
Func Example()
    ; Create GUI
    GUICreate("DateTimePick Get/Set MCColor (v" & @AutoItVersion & ")", 400, 300)
    Local $hDTP = GUICtrlGetHandle(GUICtrlCreateDate("", 2, 6, 190))
    _MemoCreate(2, 32, 396, 266, 0)
    GUISetState(@SW_SHOW)
    ; Set the display format
    _GUICtrlDTP_SetFormat($hDTP, "ddd MMM dd, yyyy hh:mm ttt")
    ; Set month calendar background color
    _GUICtrlDTP_SetMCColor($hDTP, 2, $CLR_DARKSEAGREEN)
    ; Get DTP colors
    _MemoWrite("Background between months: " & "0x" & Hex(_GUICtrlDTP_GetMCColor($hDTP, 0), 6))
    _MemoWrite("Text within months ......: " & "0x" & Hex(_GUICtrlDTP_GetMCColor($hDTP, 1), 6))
    _MemoWrite("Title background ........: " & "0x" & Hex(_GUICtrlDTP_GetMCColor($hDTP, 2), 6))
    _MemoWrite("Title text ..............: " & "0x" & Hex(_GUICtrlDTP_GetMCColor($hDTP, 3), 6))
    _MemoWrite("Background within months : " & "0x" & Hex(_GUICtrlDTP_GetMCColor($hDTP, 4), 6))
    _MemoWrite("Header trailing .........: " & "0x" & Hex(_GUICtrlDTP_GetMCColor($hDTP, 5), 6))
    ; Loop until the user exits.
    Do
    Until GUIGetMsg() = $GUI_EVENT_CLOSE
    GUIDelete()
EndFunc   ;==>Example