bug#33452: Color of tooltip text on macOS with dark mode

[Eli Zaretskii]

> Date: Wed, 21 Nov 2018 19:44:58 +0000
> From: Alan Third <alan@idiocy.org>
> Cc: Tak Kunihiro <tkk@misasa.okayama-u.ac.jp>, 33452@debbugs.gnu.org
> 
> I expect it was commit 15cd18991c1d9a9bafeef7bf9b4dad91ecc0332a.

Are you saying that tooltips on NS couldn't use colors before that
change?  Or was that color support broken at some point?  If the
latter, when was it broken and by what changeset?

Thanks.