What is the color of that tomato?
The tomato is dark.
   src        edge_attr  dst
0    0  to the right of    8
1    3        on top of    7
2    3               on    7
3    4               on    3
4    5               on    3
5    8   to the left of    0
6    8   to the left of    9
7    9  to the right of    8
8    9               on    3