Is the color of the leaves orange?
No, the leaves are green.
    src        edge_attr  dst
0     0               of    7
1     0   to the left of   15
2     2               of    7
3     3   to the left of    9
4     3               of    7
5     5   to the left of   14
6     5   to the left of    7
7     7  to the right of    5
8     8               of    7
9     9  to the right of    3
10    9               of    7
11   11   to the left of   15
12   13   to the left of   15
13   14   to the left of   16
14   14  to the right of    5
15   15               of    7
16   15  to the right of   11
17   15  to the right of   13
18   15  to the right of    0
19   16  to the right of   14