What color are the tiles?
The tiles are brown.
    src        edge_attr  dst
0     0  to the right of    2
1     1               on   12
2     2   to the left of    0
3     3               on    4
4     3  to the right of    7
5     3   to the left of   10
6     4   to the left of   11
7     6            below    8
8     7   to the left of   10
9     7   to the left of    3
10    8            above    6
11   10  to the right of    3
12   10  to the right of    7
13   11  to the right of   16
14   11  to the right of    4
15   16   to the left of   11