[DJ MacWoW]

I think white is the mourning color in some Asian countries, too.

Yes. Japan dresses their dead in white.

[Jamestown1630]

I once addressed a letter using red ink, to a Korean person.

I was severely admonished - they told me that letters addressed in red ink indicated death, to them.

I’ve never seen corroboration of that anywhere else, but I trust that it’s true; so I don’t get creative with my mail letters anymore :-)