Does the blazer look gray?
No, the blazer is dark.
    src        edge_attr  dst
0     0  to the right of   19
1     0  to the right of   12
2     0  to the right of   14
3     0  to the right of    3
4     1  to the right of    9
..  ...              ...  ...
61   17  to the right of    9
62   17  to the right of    7
63   18  to the right of   10
64   19   to the left of    0
65   19   to the left of    8

[66 rows x 3 columns]