I checked the State of California website for REAL ID eligibility before I wrote my above comment, and it confirms that people with temporary legal immigration status are eligible for REAL ID cards, specifically mentioning DACA recipients as an example of a category of people who are eligible. This is exactly the sort of thing I think should not be allowed by the federal framework governing REAL IDs, non-permanent residents should not be able to get a REAL ID at all under any circumstances and the one for permanent residents should look obviously distinct from those for citizens. The point of this is to make it extremely obvious that a REAL ID holder is definitely a legal citizen, and therefore make it actually useful for proving citizenship or legal permanent residency.