What's so bad about GameCenter?
The Stripes are independently lit, you could use a Registry edit maybe for that. Unsure.
The LOGO however seems it is lit by the backlight of the IPS panel, so you cannot turn it off, unless you take the housing of the screen off, then patch it with something black to stop the light going through.
Either that, or there's a dedicated light for the logo, which is wired parallel or something with the backlight of the IPS, though they'd need to isolate that light or there'd be a blotch in the middle of the screen, by my logic.
Vent Led board is behind the battery. Could snip it if you want through the top via speaker box.. unsure.
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