As best I can tell, all of verbling's person-based emojis default to a fair-skin complexion. This default does not reflect the global majority of the world; it also does not recognize the range of complexions among verbling's students and teachers.
Please implement one or both of the following:
Change the default to, at least, one of the medium-tone emojis
Make it possible for users to choose different skin-tone emojis via a user-friendly method that is most practical for the verbling programmers.
If there's already a way to choose different skin tones in verbling's emoji menu, please point me in that direction.