I noticed that when you are a witch and you make a person (say, player visit someone else (say, player 9) both of their names appear in the first person's name color. Here's a screenshot of what it looked like when I controlled 8 to visit 9:
Here's a screenshot from the next day showing the normal player colors:
To be clear, this isn't an urgent bug and it doesn't affect gameplay. But it's an odd quirk that might not have been noticed previously.