Does the zebra that is standing have black color?
No, the zebra is white.
    src        edge_attr  dst
0     0   to the left of    6
1     0   to the left of    4
2     3         covering   10
3     3      in front of   10
4     4  to the right of    0
5     6  to the right of    0
6     7            below    9
7     7  to the right of    9
8     9   to the left of    7
9     9            above    7
10   10               in    3
11   10       covered by    3