Hey, has anyone else noticed this:
If you terraform a track and then go back onto the normal NL editor, then you add a piece of track onto what you have already built, then undo it using ctrl+Z, you can change the colour of the floor, by just pressing ctrl+Y (redo) and crtl+Z (undo) until you find a colour that you like. I noticed this when I first used the terraformer ages ago, so there is a possiblity that it could just be my NL and no one elses , but have a look anyway.