I am trying to ascertain the differences in seats between the base model and the premium package. Here is what i can find in the specs. Base seats: Textile seating. Does this mean this is a cloth seat or is it softex type synthetic leather? Is it only available in black or can i order textile seating in other colors too? Are seats powered or manual? Is there lumber support? Premium seats: Are these leather or are these also some form of synthetic leather?