Reset/change Emoji color for human features I inadvertently hit the wrong color for a human emoji.  Holding it down does nothing and I really need this particular emoji to be correct.
You need to long press on the emoji for which you want to change the skin tone, this will show a skin tone picker.

You can do this on macOS in the Emoji &amp;Symbols picker, and on iOS using the Emoji keyboard.

Skin tone settings are saved per-emoji.

If long press doesn't bring up the picker, you have a different problem.