What color does the bucket in the middle have?
The bucket has silver color.
     src        edge_attr  dst
0      0   to the left of   16
1      0   to the left of    9
2      0  to the right of   26
3      1  to the right of    9
4      4   to the left of   15
..   ...              ...  ...
206   31  to the right of   17
207   31  to the right of   16
208   31  to the right of   24
209   31  to the right of   25
210   31  to the right of   28

[211 rows x 3 columns]