Add tokens to the user profile picture for image styles

Would like to have tokens available for Messages that display the user's picture in a given image style. By default, the [message:user:picture] token uses the site-wide configuration for how to display a profile picture (found under admin/config/people/accounts).

Looked into to using Imagecache Token, but this only adds image style tokens for image fields, and the user picture is not actually a field.

Probably just need to make a new contrib that does a similar method by adding image style tokens to the user picture existing token.