You know you can have a discussion without being condescending, right? Some of you guys need to chill out lmao.
The light wasn't that obvious. You know what was obvious? The black lodge symbol in the casino when they focused on it several times. In this case, it was more of a subtle green light, almost like a dim green flashlight. I didn't catch it on the first time I watched it. I'm in agreeance that it's one of Cooper's new tricks from the lodge, but it wasn't as blatant of a sign as the casino symbol.