Yeah I am going to add some more official context to this at some point. On the left side, of the menu, there is an icon that looks like a bunch of check marks. Clicking that will allow you to modify all the tracks at the same time. Hope this helps.

Thanks so much for getting back. I really appreciate your reply and all the work you've put into this content! I actually want to make the different tracks distinct though. For example, a dual island station (4 tracks) where 2 tracks are for trains and 2 are for metro. A crossover-type station. Is this possible? I see the "checkmarks" button you mentioned, but clicking it appears to not do anything (as in, it's "on" by default, and clicking it does not appear to turn it "off").