GUI - Transparent with GUICtrlCreatePic ???

[nyke0]

My GUI become blue instead of full transparency while I use GUICtrlCreatePic. :/
Is it possible to use GUICtrlCreatePic with a transparency background?
 

#include <ButtonConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
#include <WinAPI.au3>

$Form1 = GUICreate("Form1", 200, 135, -1, -1, $WS_POPUP, $WS_EX_LAYERED)
GUISetBkColor(0xABCDEF)
_WinAPI_SetLayeredWindowAttributes($Form1, 0xABCDEF, 255)
$Button = GUICtrlCreateButton("Button", 10, 10, 75, 25, $WS_GROUP)
GUICtrlCreatePic(@ScriptDir & '\testimg.jpg', 10, 40, 162, 49)

GUISetState(@SW_SHOW)

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit

        Case $Button
            Exit

    EndSwitch
WEnd

[UEZ]

The order of the commands is important:
 

$Form1 = GUICreate("Form1", 200, 135, -1, -1, $WS_POPUP, $WS_EX_LAYERED)
GUISetBkColor(0xABCDEF)
$Button = GUICtrlCreateButton("Button", 10, 10, 75, 25, $WS_GROUP)
GUICtrlCreatePic(@ScriptDir & '\testimg.jpg', 10, 40, 120, 60)
_WinAPI_SetLayeredWindowAttributes($Form1, 0xABCDEF, 255)
GUISetState(@SW_SHOW)

Br,

UEZ