What is the color of that tail?
The tail is white.
   src        edge_attr  dst
0    0               in    7
1    2   to the left of    3
2    3  to the right of    2
3    3   to the left of    9
4    3  to the right of    4
5    4   to the left of    3
6    6  to the right of    8
7    8   to the left of    6
8    9  to the right of    3