@forrest-harless I am on ¨holiday¨ at the moment and don have access to Blender, but Face Sets are a bit like masks, that allow you to sculpt only on parts of the Mesh, but you can have several different ones (with each a different color) at the same time…
But for some reason, sometimes, when you enter Sculpt Mode a Face Set is automatically created, coloring your mesh , or part of it.
You can find a dropdown menu on top of the 3D Viewport, when in Sculpt Mode. (or use Search).