My originaly script where I was noticing this issue was quite long, so I trimmed it down considerably (93 lines to 5) to show the example issue. From what I've noticed in related topics, it's never really been solved (at least from my searches), and it unfortunately seems to not show up on all machines. Description: It seems that when using GUICtrlCreatePic() alongside GuiSetBkColor() the embedded image will get transparent artifacts. It seems as though it's light colors only - as to what colors/shades, I cannot say. Other topics: March 2012: -- April 2010 -- July 2012 -- (not actually solved) March 2005 -- Hopefully this has been solved and my searching is just lacking... ; Window $kiosk = GUICreate("", @DesktopWidth, @DesktopHeight) GuiSetBkColor("0x000000") ; Background image GUICtrlCreatePic("image.jpg", 0, 0, 640, 480) ; --- Display the Coded Form --- ; GUISetState(@SW_SHOW) Sleep(2000) Example image file used is attached, as well as a screenshot of the window as rendered on my machine (Win7 Pro x64). To be fair I'm currently running v3.3.6.1. After I post this I'll upgrade and check the current version to see if it fixes the problem(s). The "transparent_pixelation.jpg" file shows a line through the example input image. Around the "white" circle of the image there are also areas of black pixels that don't exist in the original. I'm not too familiar with using image or form functions in AutoIt (I primarily use it to automate actions) so if anyone has any ideas I'm willing to give it a shot.