If you mean the colour of the emoji's, that can't be changed.keyboard emoji color is too yellow!
Anything newer than iOS 8.3 has not yet been released to the public.If your are carrying an iPhone newer than iOS 8.3, you could long-press the emoji that you think is too yellow for you, and then select a decent color. Try it.
I mean iOS 8.3 or higher. Sorry.Anything newer than iOS 8.3 has not yet been released to the public.