I have managed to get good results with non-colored emoji with emojione and a variety of terminal emulators, but colored emoji don't seem to work anywhere.
It appears to me as though no one actually implements the required font rendering but Gecko. See the README of emojione issue and issue 30 (which I can't link due to a rep limit on more than two links) for details. Gecko font rendering in Firefox works well for me, but it isn't a terminal and there appear to be no gecko based terminal emulators either.
While digging into this issue I found out that there are four major colored font standard proposals/approaches but still no one in the Linux ecosystem (except Gecko) appears to support any of them.
If there is in fact no way to get colored emoji right now, which project is close to implementing any of the proposed standards? Which person do I need to constantly spam with emoji to get my wish?