Do the building and the roof have a different colors?
Yes, the building is red and the roof is green.
    src        edge_attr  dst
0     1   to the left of   16
1     2   to the left of    5
2     2   to the left of    7
3     4   to the left of   11
4     5   to the left of    6
5     5  to the right of    9
6     5  to the right of    2
7     6  to the right of   11
8     6  to the right of    5
9     6  to the right of   16
10    6  to the right of    7
11    6  to the right of    8
12    7   to the left of   12
13    7  to the right of    2
14    7   to the left of    6
15    8   to the left of   14
16    8      in front of   12
17    8   to the left of    6
18    9   to the left of    5
19   11               on   14
20   11   to the left of    6
21   11  to the right of    4
22   11   to the left of   14
23   12           behind    8
24   12  to the right of    7
25   14  to the right of   11
26   14  to the right of    8
27   16       mounted to    6
28   16  to the right of    1
29   16   to the left of    6