Is the pen different in color than the mouse?
No, both the pen and the mouse are black.
    src        edge_attr  dst
0     0  to the right of    8
1     0  to the right of    6
2     0  to the right of   15
3     0  to the right of    9
4     1   to the left of    4
..  ...              ...  ...
92   25  to the right of   24
93   25  to the right of   11
94   25  to the right of   22
95   25  to the right of   10
96   25  to the right of    1

[97 rows x 3 columns]