Does the tail look blue?
Yes, the tail is blue.
    src        edge_attr  dst
0     0   to the left of   14
1     0   to the left of    3
2     0   to the left of   22
3     0  to the right of   17
4     3  to the right of    4
..  ...              ...  ...
88   26               at   11
89   26  to the right of   25
90   26  to the right of   19
91   26   to the left of   12
92   27   to the left of    6

[93 rows x 3 columns]