[@DeadBeatWalking]
So I was playing round with a site that is able to extract maps and colours. Got the details, then threw it into Photoshop and experimented a little bit.
[hider=Example map of a Tokyo dock area]
[img]http://i.imgur.com/Z5RvGnX.png[/img]
[/hider]
Nothing much, but it sort of has that street map look to it and if you want, we can "scribble" locations on it like someone is marking it out with a red pen or something. I can also make it about double this size if we want so we can mark things a little better. :)

[url=http://i.imgur.com/Z5RvGnX.png]Full size map link (800x600)[/url]