What color do the leaves have?
The leaves have green color.
    src        edge_attr  dst
0     3   to the left of   15
1     3   to the left of   12
2     3   to the left of    8
3     3   to the left of    7
4     3   to the left of    5
5     4  to the right of    9
6     4   to the left of    5
7     4               on    3
8     5  to the right of    9
9     5  to the right of    4
10    5            above   17
11    5  to the right of    3
12    5            above   13
13    6               on   10
14    7  to the right of   13
15    7  to the right of    3
16    8  to the right of    3
17    9   to the left of    4
18    9   to the left of    5
19   12  to the right of    3
20   13               by   10
21   13   to the left of    7
22   13            under    5
23   15               on    8
24   15  to the right of    3
25   18               on   17