No vendors that sell the Aramith Black measles ball advertise it as being made with Duramith, and Aramith doesn't even list the Black measles ball on their "Cue Ball" page. Nevertheless, the Black measles ball does come with the Aramith Black ballset, which is advertised as having Duramith technology, so that is one indication that it is made with Duramith. From personal experience, the Aramith Tournament ballsets with Duramith that I've played with are slightly yellowish, and the Black measles ball also has that yellowish appearance, which is another indication that it is made with Duramith. On the other hand, if you prefer a white cue ball, then get the Red measles ball.
I noticed that Predator tips that come stock on Predator shafts leave a sickly yellowish mark on a Black measles ball when I miscue, which is very hard to polish off with Aramith Ball Cleaner. In my experience, the Red measles ball stays cleaner than the Black measles ball.
Personally, I don't like playing with a blank cue ball anymore. An Aramith measle ball is my preferred cue ball.