Took a few different methods to accomplish the aesthetic I was looking for and slightly more time consuming than I had hoped.

Essentially, I'm manually placing some top layer traces to custom sized pads I created for the project to limit the light that will come through the pad holes aka "stars".  Then I'm using the tstop layer to pull back the soldermask.

One of my favorite constellations, Orion.  Now like a million to go....