I saw that picture too but once I found out it would block all my patterns I didn't go ahead with it. As I don't want the paths on a separate person in case I accidentally remove a tile and need to replace it.
I found this site has some lovely paths (and clothes): http://bibidesign.blog.fc2.com/
I'm using the brown small tile squares (Without the borders) and then the same one with green in between for my more off the track areas.
Eventually I want to pull them up so I'll have dirt paths but need to wear the grass out underneath first.
I'm lining my paths with street lamps/etc to stop people moving in on top of them, then when someone moves in I lay a new path to their door ^^