If you have or are in the process of building some streets we can recommend you to look at this black streets idea.
We know this is not a huge help but, hey! any idea counts. Sometimes small parts of the building process are the most annoying part since they are needed but not the most fun to work on. So take this a quick tip to then focus on building the fun stuff!
More at: http://www.minecraftforum.net/topic/1423391-newcraftvecternovax-city-updated/page__st__800