Eh, I'll say no need for white-font, at least on my part.
My reaction was more OMG OUCH SYMPATHY-GROSS than "Need brain bleach."
ETA: Also, Seska, when I was integrating Cosmo, I made sure to pet each cat several times a day, making sure I rubbed hands over the marking glands in the cheeks and scratching lightly around the buttocks area, and then going straight to the other cat and letting them sniff, then rubbing the other cat's scent on that cat, and vice versa.
I don't know if that's an actual valid technique, but it seemed logical to me -- mix up their scents, get that association going in their heads. I also did it several times with catnip on my hands, so the association would be mixed with pleasure.