I don't know the name of the quest so I will describe it. I saw a bunch of people outside a house and went over to investigate. One was a (secret Anglican) minstrel and invited us all to drink and I did a drinking challenge with him. He poisoned everyone and as part of being drunk and poisoned my screen turned gray. He then tried to kill me. Since I was in an area that was way out of my power level I fled after trying and failing to kill him. I then went back to settlement to sleep it off and everything turned back to normal, or so I thought. Now, whenever I exit the game and come back to my last new save the screen is gray again. I can temporarily fix this by going back to my bed and sleeping again, but it is a pain and obviously shouldn't be happening so I wanted to report the bug.