this will help for coloring quickly your avatar

I found a interesting website,it allow you to auto color your illustrator (this one talk about the tool, there are a direct link to that website in it, or check the one I leave in the bottom of this page)

Here is how it look like

And another "proper use",I think

Testing auto-coloring software in Clip Studio and PaintsChainer?? (found this video, can give you better idea about this auto coloring thing, and this new software for auto-coloring, too)