What color does the hat have?
The hat has blue color.
    src        edge_attr  dst
0     0  to the right of    1
1     1   to the left of    0
2     1  to the right of   15
3     1  to the right of    8
4     2   to the left of    3
5     2   to the left of   13
6     2   to the left of    4
7     2   to the left of    7
8     3   to the left of   10
9     3   to the left of   14
10    3  to the right of    2
11    4  to the right of    2
12    6  to the right of   15
13    6  to the right of    8
14    7  to the right of    2
15    8               in   18
16    8   to the left of   15
17    8   to the left of    1
18    8   to the left of    6
19   10  to the right of   13
20   10  to the right of    3
21   13   to the left of   10
22   13   to the left of   14
23   13  to the right of    2
24   14  to the right of    3
25   14  to the right of   13
26   15   to the left of    6
27   15   to the left of    1
28   15  to the right of    8