If you go by the source material, Philip K Dick's novels, they are extremely bleak. 3-5 people huddled in tiny, isolated camps insulated from a toxic environment, where the only joy available is taking drugs that allows them dream they are living back on Earth.
Martian Time Slip is another one, more focused on Mars (duh). But I agree, Stigmata is bleaker.
I would like to see things you people have never seen; attack ships on fire off the shoulder of Orion ... C-beams glittering in the dark near the Tannhäuser Gate.