Form có label nhấp nháy

#include "GUIConstantsEx.au3"
#include "StaticConstants.au3"
#include "WindowsConstants.au3"

Opt("GUIOnEventMode", 1)

Global $Form1 = GUICreate("Form có label nhấp nháy", 565, 288, 192, 124)
GUISetOnEvent($GUI_EVENT_CLOSE, "Form1Close")
Global $Label1 = GUICtrlCreateLabel("Nhấp nháy", 56, 72, 447, 107)
GUICtrlSetFont(-1, 69, 400, 0, "Arial")
GUISetState(@SW_SHOW)

AdlibRegister("NhapNhay", 1000)

While 1
    Sleep(100)
WEnd

Func NhapNhay()
    Local $MaMau = [0x00FF00, 0xFF00FF, 0x0000FF, 0xFF0000]
    GUICtrlSetColor($Label1, $MaMau[Random(0, 3, 1)])
EndFunc

Func Form1Close()
    Exit
EndFunc