Does that tray have black color?
No, the tray is white.
     src        edge_attr  dst
0      0   to the left of   10
1      0  to the right of   12
2      0   to the left of   26
3      0   to the left of   16
4      0  to the right of   27
..   ...              ...  ...
283   29   to the left of   25
284   29   to the left of   24
285   29   to the left of    3
286   29   to the left of   21
287   29   to the left of   18

[288 rows x 3 columns]