While creating the colony, I added a few natural elements to the scene to show an area of the planet that hadn't been fully colonized.  This was done through the patch of mushroom styled trees that grow on the planet, rather than using actual tree assets I determined using mushroom's would provide a more alien type of environment. The rest of the colony has a military and sci-fi style to it. While many of the NPCs are various types of robots, I decided to add a group of worker robots that all resembled each other to represent that there are different stations to the robots, and while some are more sentient, others are programmed to do specific tasks.