dynamically make the skin on a character to blush or become pale?

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Is there a way to dynamically make the skin on a character to blush or become pale?

As part of my CogSci research, I have made a scene where the user has to interact with a virtual avatar that has facial expressions, and I would like to add blushing and other nonverbal cues.
I’m not very knowledgeable when it comes to material, but I figured that someone in this awesome community might point in the right direction.

How would you go about it?
Thank you in advance!

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  1. Define blush area on the character (texture mask is a good way to do this)
  2. Set up blending material that lerps between default skin color and rosy tint with parameter
  3. Animate parameter, usually as a UE4-defined curve in Persona. Set up character in Anim BP to use dynamic material instance and update when blushing.

If this is your first time doing something like this, I suggest you break down the steps and learn them piece-by-piece.

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