Still thinking about planets and environments and stuff. I put a lumninance channel on the bad looking exhaust or whatever and I thought 'eh looks ok'. I then changed a few settings (don't even know which), and figured out how to add textures to specific polygons. AWESOME. I go eat a fruit, have a drink of coffee and I come back to that second one. WHAT? That looks awesome! Totally on accident, I swear it.