According to game lore, you can find such steam centurions in Arkngthunch-Sturdumz dwemer ruin in Vvardenfell, they created when dwemer specters posses carcass of broken steam centurions.
Chroma-Blue Dwarven Spider vamidiums are those powered by gems that emit a cold blue light, said to reflect the frigid stolen soul of the Dwemer engineer trapped within it.
So its pretty much possible to say ghost trapped in centurion.