Interesting technique. Are there some similarities to the Venetian Plaster technique? (Example: https://www.youtube.com/watch?v=UfGbryICt0A)
These kind of artists seem to only use quartz or other "smooth" acrylic plasters and pigments that don't have the same structure and are generally thin and temporary (less than 20 years expected age) - so not limestone the same kind of lime aggregates like tadelakt which is what I use.
I'm attempting to make something that can last 2000+ years - somewhere between an oil painting and a marble sculpture.
If you cut into it then you may or may not get different colors depending on where you slice. In that sense it’s not much different mechanically than oils, just with way more depth.
Thanks for asking!