ive just relized as now having my faa license and owning a plane. the vehicles are limited to the colors u purchase them with. i feel that if were able to modify them, like colors, livery, and smoke trails. i feel the best location for this place would be inside this hanger. and the way youd use it would be similar to the ls customs as in normal gta thats kinda how it is with your personal hanger to modify planes.