Good work getting the article started there, Ben. I've added a couple more methods of secretly assigning players (bog-standard Werewolf, which is fine for casual tabletop games, and Night of the Vampire's profession cards).

Not sure if the red-and-black thing should ask people to specifically memorise the colour of their card; I can imagine very occasional card-shy players memorising their card as "three of spades", and then realising afterwards that they aren't entirely sure if spades are black or red. (In fact, asking them to memorise the number might be better, as a glimpse of someone else's card, even at a distance, will clearly show the colour.)