There are even tooth colored die stones
Haven't had a chance to try either of these, since most of the doctors usually write ''light stump'' or ''normal tooth colored stump'' or ''dark colored stump'' or ''post-n-core'', I also get the pictures of those. This stuff is handy only if you AND your clients are interested in improving your work and take a small leap for another level, including specific determined shade of the stump (whether it is with the e.max stump shade guide or simply some Vita shade guide). In my experience, usually the younger doctors are really into determining substructures exact shades.
If I'd ever use it, I'd probably go with testing the tooth colored die stone with it, and only use it for certain cases (far too little room to make the crown thick enough to hide stump colour),definitely not in all cases.