Is the tape gray?
No, the tape is yellow.
    src        edge_attr  dst
0     0  to the right of    6
1     0  to the right of   15
2     0  to the right of    5
3     0   to the left of   14
4     0  to the right of    7
..  ...              ...  ...
61   15   to the left of    5
62   15   to the left of    0
63   16   to the left of    3
64   17   to the left of    3
65   18   to the left of    4

[66 rows x 3 columns]