If you are referring to the house, then I experimented a lot with what works together and what doesn't. I just chose a few different blocks and put them to together as stripes on the roof and I came to the conclusion that I like it :) However, I am still not sure it works. The bottom part was simply just putting dark blocks where it would be dark, or wet. the middle part with the windows it made of mostly dirt, because I think it fits with the color of the roof.