The numbers have what color?
The numbers are black.
    src        edge_attr  dst
0     0   to the left of    8
1     0   to the left of   20
2     0  to the right of   21
3     0   to the left of   13
4     0   to the left of   18
..  ...              ...  ...
91   22   to the left of    6
92   22   to the left of   18
93   22   to the left of   19
94   23   to the left of    2
95   23   to the left of   10

[96 rows x 3 columns]