Hi MrCRJP,
We don't currently offer this as a setting, but you should be totally fine with a makeshift solution. For example, the TV in my bedroom has a very bright red light to show it is turned off, so I cut a small piece of cardboard and used electrical tape to adhere it over the little LED. As long as you don't block the ventilation of the modem, this might do the trick for you!
On the upside, LED control is a suggestion I have submitted to our research and development team for future hardware we may offer. Hopefully it makes the cut!
Thanks,
Amanda