Finishing this set now. Ended up with about 50 layers per tile, so there's a really vast number of color combinations and markings possible with just these 3 different tile types.
What you won't find are any walkways or open spaces. These are all utility spaces, really busy with panels and functional-looking stuff. I'll have to create some other tile sets to handle pedestrian and ground vehicle traffic. And probably some more 3D sci-fi models will come along, too.