Tag Discussion: mourning (clothes)

With post #1313667, I noticed that we do not currently have a mourning tag (1 post currently, not an established tag), and I couldn't find a tag for the custom of wearing black (or white) clothes when "in mourning".

I think this/these tag(s) could cover many cases which funeral and pool #1626 can not.
I am asking what would be the preferred tag name for any kind of "mourning clothes" (including alternate_color versions of a character's usual costume) and if there is a need for tags for specific real-life mourning clothes.

Funeral-wear, or funeral-dress (though that could be confusing)? I should say that I wasn't aware of customs of wearing such clothing outside a funeral. Whatever it is should implicate formal.

If it's just about the clothing, then mourning_clothes ? It could be highly context-dependent though.