Title-less Thin Line Only GUI?

[WoodGrain]

This is the code I've got so far to create a 1px line , however as you'll see in the attached image, it appears to be creating a 1px gray beville around the 1px line. Can anyone point me in the right direction to get this down to just a 1px (blue in this case) line?

#include <GuiConstants.au3>
$colourBlue = "0x4073ff"
Global $hGUI = GUICreate("", @DesktopWidth, 1, 0, 10, BitOr($WS_POPUP,$WS_DLGFRAME), $WS_EX_TOOLWINDOW)
GUISetBkColor($colourBlue, $hGUI)
WinSetOnTop($hGUI, "", 1)
GuiSetState()

Thanks!

[pixelsearch]

Hi, why not creating it like this ?

GUICreate("", @DesktopWidth, 1, 0, 10, $WS_POPUP)

[WoodGrain]

Fantastic, thanks so much!