The first set of my Vallaki maps had grey streets, suggesting a paved surface that just didn't work. They were quite bright and made the town feel too modern I think. I changed that to a more appropriate brown aiming at a dirt (mud since, you know Barovia) surface. That's the form I published the whole set with, dirt or mud streets and paths.
Then Reddit user PrideComprehensive37 asked about an alternate rendering with cobblestone main streets. I hadn't tried that, so I took a stab at it. I like the result, so I am redoing the whole set with cobblestone roads as well as adding mist and generally gloomifying things.
This post outlines the steps I'm going through to cobble the roads.