Yes. I saw the same thing charging yesterday with my new '23 Tesla 3 std. I have a 240v line installed in my garage and a Bolt level 2 charger. I have been charging with the adapter included in the Tesla. Worked fine level 2 the first few times I charged to 100%. Charger colors normal. Yesterday, normal colors on charging but charger color turned dark after leaving it plugged in for 30 mi or so at 100% charged. And I had some trouble pulling the charger plug out. Jiggled it a bit and it came out.
My charger has a button on it, but the button serves to connect the Tesla adapter, and doesn't appear to have any other function.
One other thing: I leave my car open in the garage, without locking, but when I want to drive, it asks for the card again. Which is OK. But I wonder if I should completely open the car with my card before charging? Maybe it turned dark because the car wasn't completely unlocked? Just doors unlocked?