[Q] Change Caller ID Picture

I know I am being picky but I do not like the default generic blue caller ID picture that shows up when you receive a call from someone not in your contacts without an associated picture.



Is it possible to find this picture on the phone and replace it with one I like?



Can this be done without rooting? If so anyone know in what directory or where to look on the phone to find this image?



Thanks for any help.

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